ok, i guess i am still trying to tune my engine. I was running really lean on the low throttle fuel setting so i richened that up and i have adjusted the idle accordignly but i am having a surging when i try to open it full throttle. its as if it has tonnes of horsepower then it drops for a fraction of a seconf then tonnes of horsepower again. Anyway, with all this going on i cannot get a very decent top end. it wont even go out of first. Has anyone else encountered something like this while tuning?