I have just received Eastwood’s airbrush mini compressor kit: Item #13768. I have never airbrushed before, and this is the first time setting up a compressor for airbrushing use. The problem is the instructions doesn’t mention anything about setting up the compressor and regulator/filter. I assume the outlet is the ball valve with the red handle, but do I have to fabricate my own bracket for the regulator? Does anything go on that bracket on the tank? Also what is that plug on the compressor for? Do I need to do anything with that? I just want to make sure before I damage anything!