i think i may have an air leak but i have already taken my engine out and checked for leaks and sealed it (even tho i couldn't find ne). it is still acting like it has an air leak, like it is running lean but the needle settings are really rich, i have to blip the throttle all the time to keep it running, i have a new tank and all new fuel lines on it.i am getting really sick of it, it is a sh.28 p6 pro BTW, and can ne one tell me where i can get a replacement pull start in aus. and can ne one tell me the names of the "rebadged" sh.28's plz like the xtm, thanks

check your exhaust. You might have a bad header O ring or coupler. and turn up your idle screw (not the low speed air fuel) running a slightly higher idle is better than having to blip and I get a better throttle response.

Check for a leak where the crankshaft comes out of the case. It could be a bad bearing or a worn out area.

thanks guys, il check both those things today, i was thinkin bout just buyin a new engine, the sh has never really run right for me, iv used bout 5 diff exhaust on it and other various things, im looking at an axial .32 or is the .28 a better motor?

axial .32 all the way, unless you plan to race then the .28 because they won't let you use the .32.