I picked up an 1972 2 cycle Suzuki RV90 that had throttle issues. In parts diagram they refer the choke thumb lever as a starter? The adjustment seems to be the issue. It runs good with the choke/ starter is engaged, but when I turn the choke off it wants to stall. I bypassed the oil injection and mix the gas. Is there any vacuum I should be aware of that may effect its performance? Any info you have is greatly appreciated. :banghead:Thanks.