72 360 first start question

Ok so here's my latest test. I tried Rapid Robert's rockover test and everything seems to be correct. I again set the #1 at TDC back it up 15 degrees reinstalled dist. and fired it and it's the same thing. It'll run with the throttle pegged but if I let off it dies. I can't get a reading with the timing light because it seems to advanced passed the marks on the dampener. I have moved the oil gear a tooth in each direction and reset everytime pointing the cap and rotor in the same direction and keeping the dist. magnet parralel to the dist tooth. and it doesn't change anything. I've never had one like this but it's starting to seem like my timing kit or cam was installed wrong by the machine shop. If that is the case is it possible to find the sweet spot by just resetting the distributor to every possible setting with the oil gear? And if so would I treat whichever cylinder that the rotor is pointing at as #1?