Cm871 rebuild

[Bigmack713]

Hello all,
Everything is back together, but at first startup, I'm having a pop through the intake. Double checked valve lash, even loosen them up a bit to see one of them was getting hung up. I think I might have made a mistake on my engine base timing. I pinned it at the crankshaft, and used number four wedge for the injector cam and number 6 wedge for the valve cam. I did take the slack off of the gears before I torque them down. Please advise. Thank you in advance.

Roger