ok peoples my mate has a tgb 425 blade atv when you give ıt some welly and let of the gas it backfıres lıke a gun goıng off he lıves ın turkey so sevıce ant to good and they dont know whats wrong wıth ıt he changed to a dıferent spark plug and thıngs ımproved but ıt stıll backfıres any ıdeas anyone also ı was thınkıng to buy one of these but now ıam a lıttle put of by thıs does anybody else have one and are happy wıth ıt also does anyone know where you can buy parts for these ın turkey thanks ishaq