Need help tuning Quickfuel carb

I've been thinking for a while, there are probably a few problems going on. Sounds like the mains are lean and they come in around 2500. The "get on it then get off then get back on the throttle and it sometimes clears up" sounds like maybe he gets away from the lean miss using the vacuum secondaries.

The dist cap def looks odd and that is probably a minor problem as well.

The 7 and 8 plugs are dark for some reason. The other plugs are pretty light.

The next step (and first step I would've taken) is put the 68 jets back in it and see how it runs down the highway...