Have Just pickedup an cheap Kx 80 project with all parts, head is off the crank looks like its rusted will need an new piston, what i would like to do is rebuild the engine myself i have somewhat expirience but i will need some help regarding doing the rebuild any help on where to start would be appriciated, i have also cleaned out the carb for a start i will later attach an photo of the current state if needed Thanks