Did I break my COP?

You should have pulled the rubber boot out and re-attached it to the COP well. It is probably not in there just right at the moment. I suggest you pull it again.

And as long as you are in there...

What I do is take all the rubber boots off the COPs, the boots that cover the spring that connects the COP to the plug.

Then I put them all in a bucket of warm soapy water and slosh it around and clean them thoroughly.

Then I dry them.

Then I coat each one of them well, inside and out, with silicone spray.

Finally I put a nice dab of silicone dielectric grease on each end of the spring and put it all back together.

When I pull my COPs they come off super easy and make a cork-popping sound cause they all have a rock solid seal

definately be generous with the di electric grease on the springs etc. the seals should be good like he said. you will be set

When you're talking 10,000 or so volts and a few milliamps you can get away with these types of connections.