Accuracy , I have the bleeder valve on the Altarous line completely closed and the bleeder on my supply line completely closed. I had a bucket of soap foam to check all fitting. I have a water separator between home compressor and Altarous Booster that had about 3/4" water in it. I then put an in- line desiccant filter, connected to water separator to Altaros inlet fitting. I saw a small amount of water in Altaros water separator, which is then connected to Altsros Desiccant filter. I checked beads in Altaros desiccant filter and they were dry. The in-line desiccant, I noticed has a flow limit of 90 psi . That could be slowing the flow. I can't tell you how many times I checked for leak, but I think it was five different times. I have a microbore hose that I connected from bottle to altarous feed line. Would that also restrict flow to bottle. Do I need to replace that hose with a larger hose, just for fill purposes? I will post picture of my setup later.