just broke in my 01 WR426. Being a stickler for maintanance, when I got the bike, I bought extra spark plugs and oil/filters. Never depend on the parts guy to know what you need. I ask for enought supplies to do 3 oil changes. I asked is that everything I need and he said yes. Open the manual and find that I need to replace with new, several "o" rings. My question is how nessesary this is? Do they really need changing every time? I suppose I get the part numbers from them and type them a nice list up for the next guy who asks for parts for a oil change and only get oil and filter. ------------------ boxsterboy 01 WR426 WR timing, uncorked.