I thought about that external linkage. It would help as I could just cut the secondary out altogether. The carb Bob had has that but it is a dedicated Q16 carb.

I see guys running high 11:1 compression on pump gas. I wonder if on the street I could get away with a blend of 112/pump. Then really screw with the carb. I am going to get a guess on mileage tomorrow although I noticed the speedometer had quit when I left the cookout. I can figure that in with the GPS.