Hello mate,
Looks like a simple enough fault to fix, besides it's brand new and there is no reason why they should'nt just exchange it for a new replacement. These things ain't cheap and i'd be pretty pissed off if this had happened to me
I have three airbrushes and no compressor as mine has given up the ghost. Hence all the painting/weathering has been a bit of a 'How the bloody hell am i going to to get that effect with brushes?'
I also think that too much relience on an airbrush can lead to a model looking like it's been, er...airbrushed, if you see what i mean?
Hope all turns out ok with your faulty compressor,
Sav.