Ok so I got 1 of these Chinese Air/water separators and I must admit, look very well built it has absorbing pellets then oil absorbing pellets, then charcoal. I don’t have to tell you all what the Newbie world is like b/c you all have been there. While I’m waiting for my Hatsan Spark to be fixed by a computer geek( compressor works fine, fans gave out) I work extremely hard and have nerve damage in both hands, so the hand pump is Brutel to say the least So I’m thinking for my Spark to be a spare. I work on outboards so I am mechanical inclined this Hatsan is built Flimsy but worked. I’m thinking of maybe Benjamin Traveler any thoughts? Now should there be water in the threads of the endcap at the charcoal end? B/c that’s what I found I have herd of strictly keep this filter sky up which is how I operate it. Thoughts on that? So sorry for the short of a novel couple of questions and hope you cut me some slack and thanks .