Welcome Back DJ!!!! :-) How was Italy? Did you make it to Italeri? Did you bring us back an early release of their DUWK???? Many more q's later...I'll let you answer these first. LOL
Anyways, the above link from M1 leads to a nice long discussion on this matter. In fact I brought home a Sears compressor with a 2 gallon tank. Works great. One thing I learned through all this was that the air supply is only secondary to the AB. Any source will do!!! :-)
Glad to see you made it back to us here...