I am pretty sure that the problem will be corrected with the spacer. As I mentioned earlier I had this same issue with the 318, Eddy 318/360 Performer with a 650 Holley and the spacer fixed it so I believe a spacer should do the trick. The thing that is confusing me is the M1 intake has air gap of about 2 inches or better so I don't know where the heat is coming from to make the gas boil in the bowl and force it out into the carb. I'll keep trying to get this right. :sad8::sad8: :banghead: