i have a 10" .177 stock 1377 barrel you can have brother pm me your shipping addy.the amazing members here have helped me out many many times over the years,so im happy to pay it forward
Just found a custom valve with custom/sturdier screw, along with another 2 holes drilled and threaded to eventually add more support. Only issue now is to drill 2 holes in the main tube to line up with the screw holes...
Flawless/smooth hammer bounce.
Hope I explained this well.
A free flight hammer is the route I go. SSG, FFH or even a TSS create a gap so when the hammer rebounds, it free flights, then hits the rod and is done.