Hello all. I just installed a 60cc eurocylinder kit on my 1978 pinto. I also put a biturbo on it. Everything else is stock. My problem is the bike runs great from 15-40 but when you let off the gas it bogs right down and when you stop it stalls out. Then you have to restart it. Off the line it is boggy but when it gets to around 15 or 20 it pulls like a bastard. The carb is a stock 1/14/157 with the stock jet. Any help would be great guys. Thanks