My catch chute would (will) bind up after a while, from filth and eventually from the pin bending and causing it to bind up.

Straighten the pin or replacing with a thin nail. Keep it clean. What I found helped most was to attach a small and powerful magnet to the side of it to be attracted to the primer holder on the down stroke to pull it down. I used a small piece of a broken hard drive magnet.

Now mine "rarely" fails to open (maybe once every hundred rounds).