Molassi overange

[fastboys]

So I built a motor for a buddy. Molassi team 50. It was bogging really bad when you slowed down and got back into the throttle. We run the same motor so I swapped my clutching which is an overrange. Took it off his and put back on mine and now my motor is doing the same. Anyone have any idea what could be going on? Belt engages great but is slow to return. Ive tore everything apart and cleaned im lost please help

[captincvmn]

Did you take apart the center of the torque driver and re-grease it? Does the TD move freely when squeezing it by hand? Could the variator be binding up on the drive boss? Flat spotted roller weights?
I’m just taking stabs. I think from what you wrote you have your friend’s poor running parts now and the problem followed the parts correct?