Thanks. To clarify a few more items: The Speed Demon has a curb idle screw that is adjustable with the carb on the motor, it doesn't have the screw on the bottom of the base plate. This one is pre-Idle-Eze, so it doesn't have the screw at the base of the air cleaner stud.
TBH, I don't intend on putting this carb on the car for a very long time because of how much of a bear it has always been to deal with. BG made it very clear in their instructions that all four corners had to be adjusted the same and all butterflies had to be adjusted the same with the transfer slots, so I was always stuck on that and didn't want to really venture out into changing stuff independently...maybe its time to jump out of the comfort zone.