S&W 79G rebuild question

so you heat the o-rings and they swell but so does steel, aluminum or just about anything else and then you add very cold co2 and they shrink, huh

and I have a question how does a shot count go up, down stream of the valve

you pull the trigger, that releases the hammer, it smacks the valve, gas is released and you can't put it back in the closed co2 system to get a better shot count

you could back off the hammer screw to get and a better shoot count

now a better seal from the valve to the barrel would give you better performance but that is all