just curious if the stock oil pump isnt putting out enough oil? i have a 70cc BBK, 17.5 carb with a 95 jet and a k&n air filter, a tecnigas next r pipe and switched my oil to royal purples fully synthetic. doesnt seem to run right and when im riding it feels like the piston is seizing up and it dies on me after a weird whining noise and loss of power. i dont really want to ride anymore and was wondering if i should start premixing and if so what would be a good ratio?