Hi everyone. I have a 1998 yz400f. Recently I've been putting my bike back together after the rebuild i've done to it. I had the head completely rebuilt, and now i'm this far and it wont start:foul: . I tried timing the cams the way the manual said to do with the l mark on the rotor. Lined up the cams with the head making sure that the e marks were on the exhaust side and the I marks were on intake side and also making sure that there were 12 pins between the 12:00 timing marks on the cam sprockets. I have a feeling there is something wrong with the cam timing even though its the right way. Theres air, fuel, and spark. The head was torqued to spec with an oem yamaha headgasket, valves were replaced, seats were cut and lapped so there are no leaks there. I'm pretty sure that the cam timing is right but it seems to kick over without the compression that it used to. The piston was also replaced with a new wiseco with piston rings. I dont even need to use the compression release to kick it over. It has a new spark plug and the valves were shimmed to spec also. What am I doing wrong? Any suggestions:excuseme: ? Please help. I just want to go ride:ride:.