Quote Originally Posted by jthrelf View Post
Hmm. Is your channel liner installed all the way in? Make sure the extractor spring is installed in the correct direction - make sure the metal end of the extractor spring is pushing on the extractor, not the reverse.

Also check your firing pin safety plunger isn't binding. I don't think this would impact what you're trying to do here but it's definitely something to watch out for that the spring isn't all hung up in the hole.
I think the firing pin safety plunger was the problem. Before when I had the extractor spring/rod, firing pin assembly installed with the end plate over both, the firing pin safety plunger wasnt moving at all it was binding/stuck. End plate wouldnt go in.

I re adjusted the extractor, where the firing pin safety plunger can move up and down when pressing. Then the end plate slid right in.