[Ultimbow]

Also, be sure the cylinder valve is opened all the way. If it's not, it will leak.

I will have to agree on that. In welding this is one of the firs thing they tough us. Some of the valve have rubber ring in the valve opening screw and if the valve is not open completely open there is nothing to seal where the valve rotate. In short therm the effect is not pertinent but when we talk in month it can make a big difference.

When you get to the end of the bottle (low co2) sometime the output pressure goes up witch empty the rest faster. I had that problem with my c02 system. It would last 3 to 4 month form 1200psi to 400psi and about 2 week sometime less for the rest of the bottle. I am not sure why but i fix that problem when i got my ph controller.