Advanced timing and increase of fuel screw both have an effect on idle. I would double check timing then just back the idle down if that check turned out OK.
Oh and you might need to pull the lever towards engagement on the Cold Start after you loosen the keeper screw. It is a cam type hub under the cover and you may have it set too far forward. Release the hold on the cable and move the lever to the back of the IP. Then make sure the knob is flush to the dash and retighten the keeper screw.
So turns out the high idle was just from the cold start lever being improperly adjusted. What I thought was disengaged was still engaged and I tightened the keeper screw there with the handle flush with the dash. I loosened the keeper screw and pushed it down to the disengaged position. It's now properly set.
The problem now is that when I pull the lever out, I'm unable to push the lever all the way back in. It seems that it's too hard for the cable itself to push the lever back to the disengaged position. When I push it back down with a screw driver, there seems to be a bit of resistance. The cable has also been pinched in a couple different places from the keeper screw. I've straightened it out the best I could but not sure if it's too weak to push the lever back down now.
Any suggestions?