there is much i could say to that but i'm going to take the moral high ground.
As for the (so called) pulled engine,... has it been changed from the 2-stroke in the picture? because ALL 2 strokes sound like lawn mowers no matter what you do.
In my previous reply i was trying to give you some friendly advice in order to save you some money & help you fulfil your dreams of having a real chopper. I never said it was a lawnmower engine, just that it sounds like one.