Ok let me try to get some help here..I have a Valcano SV30 with the sh.18 it ran great with the moderate gear set but soon it ripped the teeth off so I bought a 2 speed conver. installed runs like an old man on cruches.Tried going to stocl settings on carb and it dies after about 40 feet or so. Thought it was the clutch changed nothing with a new one..This engine is crazy touchy with adjustments..Got the LSN about level with collar and the HSN 2 full turns out..HELP!?