[Boyso]

Take out all the compression components from your gearbox

Piston w/head
Cylinder w/head
Tappet Plate
Nozzle

Assemble everything, hold the tappet plate with your right hand and block the nozzle with your right thumb (try to keep the nozzle 1 or 2mm away from the cylinder head)

Then, push the piston in the cylinder. It should go over the port and stop right there.

If you can still push the piston, or you hear air hissing. You're losing air.

You might want to strech your piston head oring if it's the case.


What was your previous spring and FPS?