I have a one on my old motor, only thing I can think of for you, BG recomends to run a little higher fuel pressuer then holleys or other. I believe they are optimal at 7-8psi while others can be recomended 5-7. check with them for your carb because I think it ranges slightly from speed demon to road demon to mighty demon, etc. other then that I have had good luck with mine since Ive owned it.