diff --git a/how_it_works.md b/how_it_works.md
index d654611..0a563c7 100644
--- a/how_it_works.md
+++ b/how_it_works.md
@@ -45,8 +45,8 @@ In `DKII.EXE` version 1.7.0 there are sections:
 00401000-00652AA2 R-X .text
 00653000-0066BE1A R-X cseg
 0066C000-0068D53C R-- .rdata
-0068E000-006CCA20 RW- .data
-006CCA20-007A6DD0 RW- .data    uninitialized
+0068E000-006CD190 RW- .data
+006CD190-007A6DD0 RW- .data    uninitialized
 007A7000-007A7730 RW- grpoly_d
 007A8000-007ACACC RW- uva_data
 007AD000-007AE658 RW- idct_dat
diff --git a/how_it_works_ru.md b/how_it_works_ru.md
index 8f50523..673271d 100644
--- a/how_it_works_ru.md
+++ b/how_it_works_ru.md
@@ -45,8 +45,8 @@
 00401000-00652AA2 R-X .text
 00653000-0066BE1A R-X cseg
 0066C000-0068D53C R-- .rdata
-0068E000-006CCA20 RW- .data
-006CCA20-007A6DD0 RW- .data    uninitialized
+0068E000-006CD190 RW- .data
+006CD190-007A6DD0 RW- .data    uninitialized
 007A7000-007A7730 RW- grpoly_d
 007A8000-007ACACC RW- uva_data
 007AD000-007AE658 RW- idct_dat
diff --git a/mapping/DKII_EXE_v170.sgmap b/mapping/DKII_EXE_v170.sgmap
index cb26a44..544e7d2 100644
--- a/mapping/DKII_EXE_v170.sgmap
+++ b/mapping/DKII_EXE_v170.sgmap
@@ -4992,9 +4992,8 @@ struct: id=vtbl_0066EF3C,name=CFrontEndComponent,size=201210,vtable=instance_006
     type: kind=int,size=4
   field: name=field_6015
     type: kind=int,size=1,signed=True,winapi=char
-  field: name=gap6016
-    type: kind=array,count=4
-      type: kind=int,size=1
+  field: name=field_6016
+    type: kind=int,size=4,signed=True
   field: name=field_601A
     type: kind=int,size=1,signed=True,winapi=char
   field: name=gap601B
@@ -16577,7 +16576,7 @@ struct: id=constructor_00506660,name=MyManufactureList,size=2056
 struct: id=constructor_00452B30,path=dk2/world/map,name=MyMapElement,size=16
   field: name=field_0
     type: kind=int,size=2
-  field: name=field_2_roomId
+  field: name=f2_roomId
     type: kind=int,size=2
   field: name=field_4
     type: kind=int,size=2,signed=True
@@ -48087,10 +48086,11 @@ global: va=00541AA0,name=sub_541AA0,size=841,member_of=vtbl_0066EF3C
       type: kind=struct,id=vtbl_0066EF3C
     arg: kind=ptr,is_const=True
       type: kind=int,size=1,signed=True,winapi=char
-global: va=00541DF0,name=sub_541DF0,size=337
+global: va=00541DF0,name=CFrontEndComponent_sub_541DF0,size=337
   type: kind=function,declspec=cdecl
     ret: kind=int,size=1,signed=True,winapi=char
-    arg: kind=int,size=4,signed=True
+    arg: kind=ptr
+      type: kind=struct,id=vtbl_0066EF3C
 global: va=00541F50,name=CButton_sub_541F50,size=284
   type: kind=function,declspec=cdecl
     ret: kind=int,size=1,signed=True,winapi=char
@@ -59832,24 +59832,24 @@ global: va=005B6B00,name=sub_5B6B00,size=53
 global: va=005B6B50,name=sub_5B6B50,size=53
   type: kind=function,declspec=stdcall
     ret: kind=int,size=4,signed=True
-global: va=005B6BE0,name=sub_5B6BE0,size=130
+global: va=005B6BE0,name=sub_5B6BE0,size=130,member_of=vtbl_00671F80
   type: kind=function,declspec=thiscall
     ret: kind=ptr
       type: kind=int,size=4
     arg: kind=ptr
-      type: kind=int,size=1,signed=True,winapi=char
+      type: kind=struct,id=vtbl_00671F80
     arg: kind=ptr
       type: kind=int,size=4
     arg: kind=ptr
       type: kind=struct,id=vtbl_00671F80
     arg: kind=ptr
       type: kind=struct,id=constructor_005B5270
-global: va=005B6C70,name=sub_5B6C70,size=246
+global: va=005B6C70,name=sub_5B6C70,size=246,member_of=vtbl_00671F80
   type: kind=function,declspec=thiscall
     ret: kind=ptr
       type: kind=int,size=4
     arg: kind=ptr
-      type: kind=int,size=1,signed=True,winapi=char
+      type: kind=struct,id=vtbl_00671F80
     arg: kind=ptr
       type: kind=int,size=4
     arg: kind=int,size=4,signed=True
@@ -79781,11 +79781,9 @@ global: va=006CC648,name=Dest,size=4
     type: kind=int,size=1,signed=True,winapi=char
 global: va=006CCA20,name=CEntryComponent_instance,size=64
   type: kind=struct,id=vtbl_0066C424
-global: va=006CCA60,name=myDdSurfaceArr_x15,size=1680
-  type: kind=array,count=21
+global: va=006CCA60,name=myDdSurfaceArr_x23,size=1840
+  type: kind=array,count=23
     type: kind=struct,id=instance_0079D200
-global: va=006CD0F0,name=myDdSurface_end,size=4
-  type: kind=int,size=4,signed=True
 global: va=006CE850,name=my_surf,size=80
   type: kind=struct,id=instance_0079D200
 global: va=006CE8A0,name=idx,size=4
diff --git a/readme.md b/readme.md
index 76f72ed..1c40427 100644
--- a/readme.md
+++ b/readme.md
@@ -9,7 +9,7 @@ For a more detailed description of how Flame  works, read `how_it_works.md`
 The latest build can be taken from the github actions
 
 How to install:
-- copy DKII-Flame-1.7.0-*.exe from github actions to game directory (no need to rename DKII-DX.exe or DKII.exe. exe name does not matter)
+- copy DKII-Flame-1.7.0-*.exe from github actions to game directory (no need rename to DKII-DX.exe or DKII.exe. exe name does not matter)
 - copy ddraw.dll from https://github.com/narzoul/DDrawCompat/releases/tag/v0.5.3 to game directory
 - copy dinput.dll from https://github.com/elishacloud/dinputto8/releases/tag/v1.0.54.0 to game directory
 - run DKII-Flame-1.7.0-*.exe
diff --git a/tools/delinker/dk2_170.cpp b/tools/delinker/dk2_170.cpp
index 78d578c..3043ff2 100644
--- a/tools/delinker/dk2_170.cpp
+++ b/tools/delinker/dk2_170.cpp
@@ -40,8 +40,8 @@ bool collectSectionChunks(uint8_t *base, std::vector<SectionChunk> &out) {
             uninitializedData = virtualEnd + 1;
             chunkEnd = virtualEnd + 1;
         } else if(secName == ".data") {     // RW- virtualEnd=007A6DD0 rawEnd=006CCC00
-            // in dk2_170 uninitialized data starts with va=006CCA20
-            uninitializedData = 0x006CCA20;
+            // in dk2_170 uninitialized data starts with va=006CCC00 but we'll move it forward a little
+            uninitializedData = 0x006CD190;
         } else if(secName == "grpoly_d") {  // RW- virtualEnd=007A7730 rawEnd=007A7800 endVal=56000400
             // ok
         } else if(secName == "uva_data") {  // RW- virtualEnd=007ACACC rawEnd=007ACC00 endVal=56000400