Well I got the 400 put back together this weekend after the sand and water incident i tore it down and found that the muck had kept the valves from seating properly.I Completly re-did the head,installed a wiseco 11/1 piston installed a fmf powercore 4/2 and rejetted to a 160.Inow will run with the air box lid always in place along with the k&n and outerwear.For those of you who dont run with a lid this should serve as fair warning you will damage your engine no matter what type of filter you use.I ran it this weekend and she is running better than ever.

ride long,ride hard
W.F.O.