I recently purchased a chinese knockoff Tav 2 for my predator212 mini bike. It was kind of a pain to install( had to raise the motor in the frame to clear the mounting plate and driven pully) but I got it on and working. Now when I roll the bike forward, the friction from the belt on the pullys stops the bike from rolling easily. Its like Ive got the brakes locked on or something. Is there an adjustmant for this?