I have a 2006 WR450F, with all the free mods and have been loving it to death. I bought it as a leftover so it has very low hours. Today I was tooling along an old RR bed at about 55-60 for about 2 miles, then horror of horrors, the back wheel locked up. If I pull in the clutch I can start the engine, but if I let it out the engine quits. I was able to get it into 2nd gear and ride it for a short time, but when I tried 3rd gear the tranny locked up solid, now I can't get it to go back into any useable gear. Has anyone had any issues with the transmission on this bike? I guess I have my winter project all set. Are there any gotcha's I should look out for when rebuilding this tranny. Any help appreciated!!