Bump in the night!

Thanks James
Got my new sheave - 14g - blue spring - new cam plate and belt. (Also my beer cozy) Made a world of difference on my new 07 450.

I notice a bump under neath when I shift from forward to reverse and back forward. Can't see where it's coming from. Any suggesting ? Sounds like driveshaft hitting the bottom. Runs great and not noticeable when driving.

u joint or drive shaft coupler..start there

Nice!!!