There are 2 different carbs on these jewels. Make sure the carb is pushed down tight on O-ring and tighten up. I have helped 2 other people with their GMS and their problem was low speed needle in too far and needed to be more flush with throttle arm. If tank position is good and 6 turns out tells me your LS needle in leaned way too much in and the HS has to be backed out to get any kind of Idle. Because at Idle the LS needle shuts off fuel flow.