ok, so I was thinking my kids bike was running like crap because I torched the crank bearing when I tried to get it off and left it. but now after looking closer at the top end (fresh bore and apparently port) so I looked at it next to the old top end jug and it's clear he did some wanna be porting to it and I'm thinking maybe that and maybe not proper bore/hone to piston specs make it run like crap any thoughts? should I get some pix of the windows? it looks like a hack job to me now