Hi I'm new here, have a ford bantam (xr4 pick-up) with a 2.0 zetec conversion, busa bike throttles st170 injectors and intake, managed by gotech pro-X ecu everything's diy. Having trouble balancing throttles, I've built a carb balance tool with some transparent fish-tank tubing and t pieces using atf as the fluid. Problem is I'm getting it to sync at idle but not at 4500 rpm its either one rev range or the other. Any help would be greatly appreciated. Thanks