i replaced the rings, cam chain, adj the valves and all the gaskets. when installing the cams i have them e-i and e-i with the cyl at tdc. but when cranking the eng over, slowly i dont have a compression stroke, so i pulled out the decompression shaft thinking it was sticking open but that was not the problem. i thought that i might have one of the cams off and caused the exhaust to open to fast and caused this problem , but at compression stroke both cams are not even tuching the valves.???? when turning over the engine with a socket i can hear the intack sucking and the exhaust blowing , but i do hear the exhaust twice, one right after another, the first one is small and the one right after that sounds like it should.???????????? hellp?? grayracer513...... sorry, im working on a 2001 406 with stock cams.