[yelcab1]

I am rebuilding and setting up a set of webers for my neighbor 914-6. They were disassembled, cleaned, 45 idle jets were thrown out in favor of 55 idle jets. No blockage was found. The accelerator diaphragms were changed, all four needle valves were changed, O rings and gaskets were changed. Points, condensers,rotor and caps are new. They are now balanced but still occasionally spit a bit.

1. The carbs will not idle unless the two idle stop screws are turned in 2-3 turns.
2. They will be slow to come back to 1000 rpm when they are revved up to >3000 RPM.

No binding of cable is found.
Compression is good. Timing is set via static timing mode. Valves are well adjusted.

Any thoughts? I don't play with carbs enough to get really good at it.