Ok, heres the deal. I bought a 2000 YZ426 that I wanted to put the autodecomp exhaust cam in it, so I watched the movies, read the directions and went for it. Somehow, in the process I lost TDC. In my stupidity I tried to get it back without the exhaust cam on, in the process I just lost TDC even more and got the chain caught down in the bottom. I freed the chain and can put the exhaust cam back on it now, but I don't know how to find TDC in order to line up the cams in the right spots using the dots. Any help on this would be GREATLY appreciated. Also, the clearance was .254mm before I started taking it apart, and now when I check the clearance, it is weird because I can put a .762mm gauge in, but I actually see the lifter move when I put it in. Is it normal to be able to move the lifter while checking clearance with the gauges? I am pushing fairly hard to get it in there. Thanks for any help!