I am new to the forum and recently purchased a used TX200HC from a dealer, with what I will describe as a mk2 stock. I called Air Arms, who happily told me it was manufactured in 2001.

When I bought the gun the shop test fired it, then I went home and put a few pellets through it. All was good. Then last weekend I took it to a range and put half a tin through it indoors. It was performing nicely. So i thought I'd have a go outside. The wind was light, but i couldn't seem to hit any of the targets. Then I noticed some white hard wax bits in my chamber... odd, I thought. Suspecting it was bits of the piston seal I borrowed a chrono and was quickly alerted to the fact that no pellets were exiting the barrel

I wont tell you how many pellets were in there, but it took me all Sunday afternoon messing with bits of dowel with drill bits and screws stuck in the end, that was a complete fail, but they came out in the end with zero damage to tbe barrel! fyi long 5mm wood screws with the point cut off screw into the skirt of a pellet nicely, just make sure to wrap the screw with one layer of tape - anticlockwise looking from the head of the screw so the tape doesnt come off.
I have a set of new seals on the way from Julian, top bloke, thank you for the awesome service!
I just had a go at cleaning the internals and they look good. there's quite a bit of pitting on the latch rod, but i dont fancy removing it to polish it, seems to function ok. Theres a few nicks and worn areas but nothing bad. I'll try and get some photos up soon if anyone is interested.
If you read all of my waffle, thanks, if not I don't blame you!
Tom