Adding pressure to the 1st stage and weight screws fixed the latching problem.
The rifle will now latch every time.
It still needs some more adjustment because the safety pin does not always reset.

Thank you for taking the time to reply to this post.
You have educated me on the TX 200.

Thanks again.

I think you are right Sake-san,
The front stock screws are not touching the cocking lever.
I have not tried the trigger adjustments, what is the proper adjustment procedure from scratch?
I can not feel much difference from 1st to 2nd stage on the trigger.


Thank you for the help.

The rifle will fire now. I left out the top hat, tightened the retaining screw, jerked on the cocking lever(At the end of the cocking stroke) and used strips cut from a plastic bottle to shim the latch plate. The rifle was working fine before I started this project. I still do not know what I did wr...

I removed the top hat, and it still will not latch.

Thank you, Bosun.
I might order a tune kit that includes the spring, that should correct my problem.
But, I still want to know what I did wrong.

Hello, Newbie here. I decided to re-lube and polish my TX-200 MKIII for the first time yesterday. Now my piston rod will not latch. What I did: I removed and replaced lube, polished spring ends, and trigger. This rifle had no spacers, just spring,top hat, tube guide and a washer between the tube gui...