shee was doing it when i first got her but put it down to old plugs, changed plugs and it did it again so ever the optimist i put it down to bad plugs, then i stripped and rebuilt the top end with new pistons and afresh rebore (65mm) went out on her yesterday for an hour shee runs perfect and goes like a stabbed rat with a new set in but not for long it fouled 3 sets of brand new plugs in less than an hour, im using BP6ES and ive also tried B8EGV it fouled them too, im premixing at 32;1 with a decent quality oil (texaco) am i running plugs that are too "cold"? or is it a jetting issue. my mods are listed in my sig