Hello 50040Leviathan -
If you refer to the Sellathon counter and have had difficulty removing the HTML for it, please let us know in a support case and we can send you the appropriate steps. Alternately, we can run a command to hide the counter - but there is no tool to remove the HTML for it from our end.
The new gallery has been set as the default gallery for new listings very recently, so you should not have any new listings going out with the old gallery unless you change your account preferences to do so. The new gallery will also be applied to relists done using Auctiva - the old gallery code will be removed on relist and the gallery code added.