[WhatTheWho]

There's only a few things which can cause your slide to stick; either something is jamming your slide, or your blowback chamber assembly is messed.

First, solve the issue with the screw holding the blowback chamber to the slide. Tighten, or throw some locktite on it.

You should test if the hammer assembly is actually functioning properly so you can isolate the problem, as there seems to be a number of them with yours.

Just cock the hammer manually with the slide off, and pull the trigger. Ease the hammer down as to not let it smash into the hammer assembly frame.

And if you could, disassemble the blowback chamber for a quick check of the rocket valve and piston. Either one being misaligned can mess with your blowback.

Also, what recoil rod would you be using? Stock or upgraded?