650 or 750 cfm. carb??

I'm curious as to why you think Demons are a pain to deal with? They are almost the same carb as a Holley or a Quick Fuel. 4 corner idle, power valve, double pumper, seems the same at least. Never had a pain dealing with mine.

I found my Demon to be quite finiky,make an adjustment take it for a ride everything goes out of wack,make a few more adjustments same problems finally gave up on it..Quick fuel right from the get go best carb, i've ever bought not one issue with it going on 3 seasons of racing..And Demons are not the same as a Holley Holleys are much easier to deal with..glad your having good luck with your Demon but i'll never buy one again...