[rokndad]

Eureka!

I did a couple of things, after I got the new setup to idle and run without popping. Lowered the fuel level in the bowls like Rick and Phil suggested. I used Phil's method of measuring the tang dimensions (.220). Secondly, I installed the F11 Etubes and stayed with the 135 mains, 65 idles. Idle mixture screws exactly 1 and 1/2 turns. Virtually no idle speed screw. Idle at 750-800. Lastly, a bottle of Lucas Octane Booster in the tank (20 gal +/-).

Almost no dripping or percolating at shutdown. Before it would happen about 3 to 4 minutes after shutdown, and spill a lot out of the squirters and bubble for about 8-10 minutes. Now, just a tiny bit dribbles, but not enough to be concerned about, and it doesn't leak out of the gaskets onto the intake like it did earlier. Thanks Brent for the article about winter, fall, spring and summer gas mixes. I think this combo, synthesized from all you guys, did it. I'm thrilled!!