Hot off the presses guys!!.....Yamaha has released the service bulletin # M07-001 for the 2007 WR450F. I just received the letter today via FAX from Cynthia @ Yamaha 800-962-7926. The affected part is the Air Filter Guide (Cage). I am attaching the letter I received as Cynthia and SC said it would be ok. I hope that everyone gets this and heads right down to get the problem resolved. I have already contacted my dealer and they are ordering the part for me today, hope to get it in by the weekend. YIPPEEEEE!!!!