All Plugs Fouling on Right Bank

Finally playing with it today. Rod was not bent. I put it back in and fouling is gone. That's the good news.
But I have a nasty stumble off idle. I've set the initial at 15* before, she's warmed up and idling at 800 (manual transmission). The choke is fully open. The smoothest and the highest I can get her to idle is with the two idle mixture adjusting screws turned full counterclockwise (richest setting, says the manual). I feel it should be idling a little smoother.