[1968GTO421]

I always find Sirrotica's posts very useful. Back in 1964 I had an old car with a factory manual choke. My dad taught me how to properly use it. I've had many an old car with dysfunctional automatic chokes but rather than repair them, I converted them to manual. Back then there were many kits available to do so. When I've bought Holley's, I've always bought the manual choke ones as I am familiar with them and find them to be trouble free. I hope Sirrotica's post helps out the OP well.