Excellent advice... thanks, Pat! I'm not sure exactly where I am on the mix but that could be subject for whole other thread. Reading my plugs, looks like rear cylinders are right on (tan) but the front cylinders are fouled black and the ones in between are a gradation between the two. I'm guessing that probably means idle circuit or primary jets too rich.

The reason I was guessing I might be lean is when the air gets good, the car goes slower... Hmmm