Edelbrock part throttle surge help

I take it this problem got.solved? This funky carb has me all messed up. it ran.fine last year. I rebuilt the engine with new heads, flat top pistons,I beam rods, and a comp he268 cam, Edelbrock performer. I found rust in my fuel system so I rebuilt the carb all stock, replaced my fuel system and started it up to drive finally and it's surging at light throttle. Never had this problem before!