Hey fello thumpers, I have been reading these threads for ages and have finally decided to add one of my own. I have owned my 2002 yz426 for a year now and over the past few months have found that every now and then (well three time over the past 4 months) I have been experiencing trouble starting her up due to a fouled plug, ie: if it does not start within the first few kicks, I know this is the problem, cos other than that she is as sweet as a nut within the first kick or two. I change the plug and BANG she is thumping away... When I inspect the old plug, sure enough it is all oily.. Any ideas????