My car really runs well enough for me personally. Cliff really helped me alot, i never blocked the hole and relocated them further down inside top section of my rochester.Always looking for a little more top end, is there any real seat of the pants differance in relocated them down further. My exit hole are even with secondary blades plus i knotched the holes and cut a small u in front of blades.17056240 carb. Thanks for all your help Cliff!