Timing Retarded

Are you saying that you unable to physically set the timing further ahead?

Yup, thats it exactly. I loosen the bolt on the top and can retard plenty (hmm, there's a life lesson in there somewhere...) but the furthest i can advance is 2 deg after TDC. Already tried moving tooth, first time got it the wrong direction and two cylinders backfire. Other direction sets it too retarded and runs but can't see the timing mark.

Thanks for the pic, didn't even know bout that second bolt! Gonna try it today after the honeydews.