Joe, the HSN is one half turn in from flush, it blubbers and almost doesn't clear out on top if I go any richer on it. We're talking dog slow spitting oil everywhere. I have found the bog with the HSN before and that was like 2+ full turns in. I have not touched the idle screw, idle is not high when the engine is warming up for 4 to 5 mins on the box. I actually have to keep it from stalling for the first few mins. It does start "racing" after I am racing for 8 to 10 mins and come in for fuel. Ballpark figure here, how far in should the LSN be from flush on a Full Mod for a good tune? Mine is currently 1 1/4 in.