How to get 100% airseal:
I dont know who this pic made, but it is really good. If somebody know - tell me please.
Its a big chapter and i could write some pages how to test and fix things.
Lets keep it short:
Test - if you know other ways to test the points, tell us please:
1) What? Cylinder/Pistonhead
Parts needed for test: Cylinder + Piston with Pistionhead
How to: Seal one end of the Cylinder with your hand/rubber pad and press the cylinder in
What should happen: air should compress and you can not move the piston further in
2) Same like 1, seal cylinder-head-nozzle with your thumb
3) Insert P+PH, Cy+CyH, tappet plate and nozzle in your gearbox, move tappet plate with nozzle forward (shooting position) and presss piston into the cylinder. Most people loose fps here
4) assemble the whole system, fire semi till the nozzle is in the forward position. light with a bright flashlight into the uploading nozzle (coming from the mag) and look into the barrel - you should not see light.
Other test: Hold the nozzle on the bucking lips and blow into the barrel. Measure how far the nozzle touches the lips.
5) Hard, also testet with the 2nd test at 4.
How to fix?
Lots of ways, tell us what doesnt seal, we tell you how to fix it.