..i have a bing 85/12/104 A carb on the eagle1. does anyone know of bigger, stock/off the shelf, bing that would fit without changing the manifold? i ask because that carb. seemed to small for it stock, flattened out at 20-22mph (im told it should do 30mph). now i put the proma curcuit pipe on it (its stock length now, i did'nt have to stretch it after all) and think it will be pointless to get jets for that carb. would it be better to get a bigger stock bing carb. and play with the jetting on that? any thoughts?...