I'm resentlly getting backing into painting and thought I'd try learning Airbrushing while I'm at it. A few years ago I was giving a "Testors" Prof Airbrush Gift set, but now that I'm looking through the set it seems to be missing some pieces. The paint supplies can be inserted into either side of the airbrush and then a plug is inserted into the other side. I don't have any plugs and can't seem to find a place to purchase replacements. Any suggestions? I'm also missing the instructions for this set if anyone can point me to a link I would appreciate.