Not gonna be a full rebuild, but I am doing motor work. I traded my 400ex for this (not knowing it had problems), and i ended up taking it to my mechanic (also my friend) and he told me the motor is trashed. He asked if I wanted to come down to his shop at 3, and work til 6. He told me that he would only charge 2-3hours of labor ($60/hr) just for having him showing me step by step on how to build an R motor. My motor is gonna have a JE 13.8:1 Piston, Hot Rods Stock Stroke Crank, Cometic Gaskets, Wiseco Cam chain, and possibly Kibblewhite Stainless Steel Valves. I hope it all turns out good and will get pics up as soon as possible!