3.9 increments by .02 and only .02 as far as I know. Versions above that, you should be able to set the BPM to whatever you want manually, without having to use F7 and F8 for tempo control. I'm not exactly sure that there is a .01BPM per key fix for version 3.9 (probably is but it's not a big deal for me).
Additionally, if you still must use 3.9, you're probably better off changing the BPM a slight amount, saving it, and then going into the .SM or .DWI file itself with StepMania still open and editing the BPM in that you want in Notepad. Save the file, hit ESC in SM and reload from disk. |