Anybody know why the HD Billet foward controls will only fit up to a 05 Deuce? At my dealer they said the only difference is the master Cyl. resevour cover that say's dot 5, and 06 and later take dot 4. Cannot get a clear answer from the motor company. I do understand there could be a liability problem, but is that is the only issue? Not alot of choices for the 07 deuce (the FXSTD exception).