Paintball tank "pinging"
My Crossfire 68/45 Just started making a "pinging" noise, accompanied with a slight vibration, with every shot recently, which is very odd because I have owned it for 4 1/2 years and It has never made this noise before. It is getting close to the end of It's hydro. I'm guessing this probably has to do with the reg, not the tank itself, but the hydro is worth mentioning. Is this an issue? Do I need to/what should i to fix it? Thanks.