Scott, we purposely tuned it that way to help out the big
oil companies!
Actually it's going over to my buddy's shop today to figure out the problem. Me thinks the carb jets probably have to be sized differently. We'll also check the timing while it's there.
I had pulled the plugs the day after I saw you and surprisingly none of them show any signs of running rich. But the engine does not run smooth, especially at higher rpm.
It's just been too darn Chicago-like, to be driving to get it to the shop.
Ralph