I know this thread is waaaaay old but it helped me alot as im about to fit an ap paddle to a 2.0 black top mtx 75 with lsd and found same problem short bolts.

Burton have these for anyone else running in to same problem.

Part number as follows

FP451 - 1.25 "
FP452 - 1.5"
FP454 - 1.75"

Bout 75p each