The belt guide should not be rubbing the belts.
Dalton Gear (www.daltongear.com
) does not make a transmission that they sell. They will custom make one and apparently that is where Bunton got it.
If the output shafts are turning but the mower is not moving then either the pullies or the belts are worn out.
If it is a variable speed tranny and it only goes one speed regardless of where the selector is then most likely there are clutches that are worn out.