I have a gremlin in my GQ and I can't find it!

[threedogs]

had the same problem on my old gq and turned out to be the diafram in the mixer had a hole in it ( the round thing ) brand was impco
replaced and all was good

More on the Impco converter buy a rebuild kit and some carbie cleaner and it'll be good as new again.
FYI mixer is the bit that fits on/under carbie, I used a NEW WORLD mixer which sat on top of a 4 barrel carbie.
On the side of the Impco theres a screw with a spring you could turn it out one flat to make mixture richer. Remember where it was in the first place
You should also have another in the main gas line for overall gas delivery