I wonder if I've been a bit unlucky with the tbt stuff, but I've had two kits now, one was oversized, the other was loose, a bit disappointing IMO opinion.
I was going to say about the scope being backward but I didn't want to be a dick
Looks great, love low mag scopes like this I use an old 4x32 tasco it's great
Can't imagine the would 'need' a piston sleeve as such but it might smooth things out a bit.
My 99 as standard got worse the more I did to it.
I fitted a ptfe piston sleeve which fit just right but it caused the cocking arm to rub abrasively on the slot. Tbt kit didn't do much either, the delrin guide was just as loose as the factory one which was very disappointing.
In the end it's had a polish and relube and does coincidentally 4fps over 20 shots with ease with RWS hobbies, I'm feeding her RWS superfields now though at about 5 fps.
Something to consider is cal. .22 is tha