I bought 3 of these tanks from my favorite vendor, The one that i gave my Hubby works fine but mine feel like they are suffocating, like sucking milkshake through a straw. I thought at first maybe it was the carto, so i changed carto, same problem, so I broke out the 3rd one that I bought and the same thing, so I tried changing that cartos as well, same thing. PLEASE HELP!!!