Well, I'll soon be racing again. Sold the Duc and picked up a beautiful 05 WR450F today... it's PRIMO!!! Anyhow, all I've ridden is YZs, so I'm relatively new to the WRs. I would appreciate any and all suggestions for mods and some answers to a few questions: 1. Is the exhaust cam retarded one tooth like it used to be or is that just a myth? 2. Are there any other free mods I need to do than the grey wire mod, throttle stop, air box snorkle and the smog crap removal? 3. I have noticed that the exhaust cam plug replacements are not applicable to the 05 WRs... does this mean that Yamaha has fixed the plug-blowout problem? I haven't had a chance to look at the bike yet. 4. Is the stock drain plug magnetic? If not, I need to pick up one. Think that's it for now. I'll appreciate all your replies.