I'll guess you mixed up the balls(there's 2 different ones in the kit)or you transposed the spring/ball in the power circuit. Something is not put together properly. Check and see if the air horn isn't warped either. This article pertains to 2 carbs but the pictures might help you get things in the right order. Click on the link then tech tips and then multiple rochesters. Good luck.

http://www.inliners.org/


1952 1300 Canadian 1/2 ton restomod
You Tube