OK this is whats been going on ,its has been fouling up the left hand plug ive replaced reeds,intake boots,coil and leads and swapped over carbs from my brother bike(same jets 320 main but 25 pilot) but left the same neddles in that were in mine bike went for a ride today and it foul the plug again put in and new one then went for a ride it was running good for 20mins and then it was running off and then started making a rattling sound turned it off and brang it home and this is what i found is Wrist pin bearing on the left hand side has be all smashed into small bits, so what is the cause of all this its really giving me the sh.ts.
When you split the bottem end is there a short cut to just the crank for little bits of shit soo ido not need to pull the hole thing a part
cheers Ian
P.S sorry about my english too