My apologies for being off topic, im new here too lol.

thanks for the facotry settings codokas - when you say - 2.5 turns out, you mean having had the valve screw in fully (turned clockwise without tightening) fully leaning the needle, then coming back 2.5 turns yeah??

electricirc - thanks for thelink mate, wouldnt happen to know where/how much i could pick up a new piston / sleave....

im gonna take the thing apart and strip it down, find out exactly whats going on... so on the off chance they look severly worn... im guessing it would be cheaper to replace just those parts than buy a new engine.... if so is it significantely cheaper? or would i be better investing in a new/bigger enigne??