<VV> Idle Surging Problem

[Nolan Grant]

Hi,
Looking for some troubleshooting tips on how to fix an idle surging problem
on a 1965 180 Corsa Turbo. Rebuilt the carb, rebuilt the turbo,  all new
exhaust system, no vacuum leaks, throttle linkage is set right, new
accelerator pump, new fuel pump, tried three different sets of jets and
modulators (back to stock now), float settings have been changed three
times and now back to stock setting. Timing is fine. Any ideas? Most people
are telling me it needs a new carb.
Thanks,
*Nolan​ Grant​*