I just got my 30 cal Maverick sniper and have a strange problem filling it. No mater what I do, it will only show 210 bar. I have over 250 bar in the scba tank but the gun will only take 210. I figured it was a bad gauge so I replaced it but the new one reads the same. I have an Impact and the gauge on it reads about the same as the liquid filled gauge on the big bottle so I'm pretty sure the tank gauge is right. What in the heck could restrict the fill pressure?? 2 bad gauges??? Maybe I'll pull the gauge off the impact and try that. Could the fill port or the bottle cause this? I'm stumped..