acceleration issues

Have you done anything to your squirter nozzles (drilled, replaced, etc)? Also, with changing pump cams did you make sure to adjust the pump arm for the correct clearance (I'd check that first if not)? If pump cams didn't work I'd try drilling the primary nozzle, or buy an assortment of new ones, to see what that does. I had the same problem once I was getting my carb close to dialed in and going from a .031 to a .037 primary nozzle solved my tip in stumble at light cruise.

Also, I'm thinking you run a mechanical secondary carb, am I correct?