Help please - Cam timing experts

Hi guys, I bought a 73 dart 340 last summer and never could get it to run right. Motor was "rebuilt" at some point by an engine shop. My buddies and I tore into it this past weekend as one of them suspected that the cam timing was possibly off a tooth. When we pulled the cover it was obvious there was a problem.

The car ran, started fine, idled a bit shaky but idled. It was gutless, and ticked when you got into it. Also the previous owner added a line on the balancer for timing, which was about 30 degrees off from the factory notch.

Any thoughts? Usually it's dot to dot correct?

Thanks in advance,
Robin