When I set up my quadrajet I grabbed one of my choke coils to install in place of the heat riser choke. The choke worked the first few days and then stopped. I got around t looking at it today and no matter how far I rotated the coil the choke would not go on. I removed the coil and found that where the pin for the choke mechanism slid through a cut out on the coil spring. I can't find any like it online so I'm wondering if any of you has seen this and why it has a cut out. I replaced it with another coil that has no cut out on it.