Hmm well mine wont run with the #15 pin behind the tooth (toward intake) so it was suggested to move it on the other side toward the exhaust. Its firing out the intake now so I am thinking the cam isnt staying closed long enough. But wanted to check. I will have to check on the marks lining up thing. So your 2 mark is level with the head, on the intake cam, and the 3 is stratight up? Cause if I remember right that is the way mine is. But will double check.