Reading Spark Plugs

It is definitely rich at a cruise. I can't see into the bottom of the insulator but I'd bet it's rich at WOT as well. Superformance makes the best gaskets for under the carb.

You probably need to use a smaller idle feed restriction and if the metering blocks have the IFR at the top of the well you need to move it down. You probably need to open the power valve channel restricters up so you can clean it up at a cruise. Without seeing the carb, I'd say you will probably need to install T-slot restricters.

We won't even get into emulsion. All the above will clean the carbs up a bunch.

BTW, in the section someone has 2 matched double pampers for sale. I'm not sure if they are TR calibrated, but on those carbs everything is adjustable and it's easy to do with those carbs.