Square Bore VS. Square Bore

Five minutes with a burr would fix the problem, no spacer needed. The man is designed to take a 750 AFB carb, which has 1 11/16" t/bores. The 800 AVS is slightly larger at 1 3/4" or.......1/16" bigger....which is 1/32" bigger at the man openings. So only a very small amount of metal needs to be removed....hardly 'hacking up' the intake or removing enough metal to change the flow characteristics.