[01yelrt]

The exhaust valve- check ball sticks on my setup. The newer carbs (spanish built) come with a plastic ball in the exhaust valve which seems to get stuck and then the carbs go unpredictably from ideal mixture to very rich in a hurry. Does anyone have a solution for this problem?
The car "loads up" sometimes, not all the time by any means. I'm still working out the bugs on the system it runs perfectly 85% of the time. However... that leaves 15% bad.
PS, I do get some popping out of the exhaust frequently just off throttle. It seems to pop less after the car has been running for a while and it's fully up to temp. Still there is quite a bit of popping.