Another 30rounds test fire, works perfectly smooth, loud and clean load and eject. Could be the clean up and light mod for the internal last light make it the best.
Today fixed and solution:
Shell leak when recharging, roll the shell to see which direction could minimize the leak for time being, or just replace o-ring.
Once you get the shell charger, you need to install the co2 container to the shell charger, there is an clear o-ring in front of the co2 container, don't damage it, I did and thats why I though it used a lot of co2 cause it was slow leaking, lol. Hope that is ture.
The charger pin stuck in to the end cap, lightly file the pin would be fine, make sure not too much or it will cause co2 leak during charging.
I think that is it, hope those info would help. I need to go back to shoot some more now, haha!!