Anyone had or heard of 04-06 or 07-08 R1's with valve trouble? My 06 with 24,000 miles dropped a valve and just about destroyed the motor. (Thank goodness for extended warrenty) Since then I have heard of at least 4 other cases of R1's dropping valves. Some were caught before failure, but some resulted in complete failure, like mine. Mine resulted in a $8600 repair. (again, thankfull for warrenty) Just curious if anyone else has had or heard of similiar problems. I have never questioned Yamahas reliability or worried about problems with my bike until now. Just hopeing to avoid problems going forward. Thanks.