HALP Quadrajet dribbling

[Peter Fenske]

Howday all

Hope you don't mind a excursion into history

Relative has a quadrajet equiped car which must pass smog
To get the cat to light CO must stay below 1%
We can get this adjustment but dribbling from the
primary venturi booster sets in.. randomly.

One minute the CO is 0 % cat on and next
minute is 5% cat drowned not lit.

Does anyone remember how to cure venturi dribbling
I managed to do this once by increasing the idle
feed restrictions but smog won't allow me to do
this..

Any ideas please

TIA:peter