Problems with KSC SIG SP2022

[Uniform]

Hello,

GBB Handgun: KSC SIG SP2022 Double Action Trigger with De-cocker.

I've got a few issues regarding my Sig Pro that I have not be able to rectify.

A. Weak gas release. (Original parts)

I am getting weak gas release from my initial shot in double action when there is a BB loaded in the chamber. After going into single action the cycle is far stronger from the former. This aspect is seen and felt from each shot in DA and SA. Ive done cycle checks and valve check on my gun and mags. No improper cycling and leaks. Unable to ascertain why this is happening.

B. New Nineball release valve jams. (Nineball release valves)

Installed the high release valves from nineball for KSC Sig Pro. From what I could see the o-ring on the moving valve portion runs off its pre-set groove each time the mags are filled with gas.
Result : one maybe two shots before valve release improperly cycles and leaves the valve open thus releasing the gas.

Really hope somehow could shed some light on this. Where I am from its pretty hard to find skilled technician to ask for help.

Many thanks,

Uniform