Scheduled Task can set priority values that can not be set by the user in the CMS

[garjt]

The options available to the user when setting priority values are 0, 0.25, 0.5, 0.75 and 1. However when these values aren't set manually it is possible for the scheduled job to set values that are impossible for the user to set. Is it possible to give users the option to have more granular select options (0.1 intervals rather than 0.25)?