Is the cam timing the problem, or something else?

I seem to remember you were having some problems with your cam timing, another reason why I believe that is what the trouble is with this one. I may just pull the cam out and use one that came with my engine.

Why would you do that when the cam you have hasn't been degreed and essentially isn't in the engine "right"? You really have zero basis for comparison. Swapping cams may put you in the same place you are, maybe worse.