I think 61 doesn't exist, because if you look at the display it always shows 1-30 or 31-60, but in dimmer mode it flips to 1-60.
I would also advice against moving the dimmer attribute to the right wheel, because all dimmer shapes will be lost, and you'd have to create a new shapefile to regain them.
Isn't it easier to just NOT select the fixtures you are using, and using the new feature of the 2004v1 software to apply attributes only to fixtures that are in a memory by holding "focus-add" and then pressing "memory-swop", or even use quick pallettes
On a Side note, you could also edit the focus mask, so that one of the attribute buttons that you'll never use, masks all attributes. This would also solve your problem.
I'm interested in hearing other solutions, because I have the same problems with accidentally touching the dimmer-encoderwheel.
good luck
C.