Surging while cruising at steady speed. Idle and acceleration great, Help!

BTW, OP, read post #6 and beyond in this thread for other suggestions on this issue which showed up similarly in a 454:
Quickfuel 750 part throttle hesitation - Hot Rod Forum : Hotrodders Bulletin Board

This carb has a lot of adjustable bits and I'll be darned if I can find good documentation online to point you to. (I just know about them because of my time with Weber DCOE's back-in-the-day which had all these adjustments available back in the 60's...glad to see this come to the V8 carb scene!)