Had my engine and carb rebuilt. Tubeframes.com did the rebuild which included test running it. I finally hooked it up to my engine and it will only run with the choke at 3/4 or more. I've played around with the adjustment screws but now I can only get it to run on starter fluid. I checked for leaks and fuel delivery already. Can't find any solid info on this specific carb for adjustments, PLEASE HELP.