Spark Plug

Ok, if it idles cold without a choke it’s pretty rich.

Looking at your timing it looks better than it sounds. As long as you are in the mid 20’s for timing (at WOT) around peak torque you are fine.

It looks like it could take more timing at light loads (cruise).

I think I’d work with cruise timing and see if it will take more timing there (like adding vacuum advance) and then I’d work on the carb.

Your timing looks better than it sounds lol.