I've had my WR for a couple of years now, WITHOUT major problems, and WITH major fun !!! Last week I went MX riding and put the YZ pipe on (I normally run a 92db CRD pipe for trail riding). Would the bike idle, would it run smooth?!?! I've always been a little 'scared of the unknown' when it comes to messing with carbs, but I feel that it is now time I had a go. I've looked through some of the old posts in the archive but I'm afraid its like a different language. Any guys in the UK got any reliable settings? I'm running YZ timing, and the carburation went off when I changed. All and any help gratefully accepted. I'm on holiday next week so its play time !!!