I've decided to re-route my cylinder head breather hose. Mike Hobbs on Offroad.com suggested doing this in case you stall while crossing some water. I personally don't have the opportunity to cross water very often, but I've pulled the hose off the head and noticed dirt clinging to the inside of the hose closest to the head. Who knows if any made it into the engine or not. Most likely nothing has since the bike is running great, but it seems like this configuration leaves the engine vulnerable to debris. This may be blasphemy, but a friend of mine ordered the plumbing from a CRF450 and put that on his WR450 and said it works great. It's a clean design and guarantees that dirt won't make it into the engine. I've decided to go this way, also. Parts totaled $40. I guess I could have gone cheaper, but my way probably wouldn't have been as clean. I haven't had an opportunity to check out what the fast guys are doing (if anything). Any suggestions (other than kicking me off the forum for suggesting honda parts) are appreciated. I haven't come across any threads in the forum about this subject. If there are, please direct me to them. Thanks.