I just got and installed this new assembled 3 speed for my savage. I have a Picco 26 with a 13T bell, 47T spur. After I installed it I took it out for a run. After a few blast up and down my paved street, I notice there is a clicking sound coming from the trans when moving backwards,and sometimes forward, with the motor off. It dosent make any noise or anything when driving, just when moved the drivetrain has a sort of poping. Just looking for an idea before I pull this all back apart again.