I got this double hose regulator on E-bay from a guy in Florida who told me it was rebuilt by a guy who was in the navy seals and it was very much dive ready. I must be doing something wrong because when I read you information about the royal aquamaster you are selling you are say they are the best breathing double hose regulator and I can hardly use this one in my Y pool without needing to stop for a breath. If you could see if perhaps a valve or something is stuck on this royal aquamaster double hose regulator I would like to know. If you think that all is fine and it is working like it is supposed to work then perhaps you want to buy it because I can’t dive with it when it is so hard to get air.

