Gaaaads yerself...
If I were a shop, I'd have the compressor on all the time. Since its home, there's some comfort in knowing it's not on unless it's being used. If we were to go away for a day and a leak sprung up, I'd hate to think the compressor would be running continuously for that time.
I suspect the leak is in the compressor itself, so if you want to pony up the $600 for me to buy the one I reaaaaly wanted...many thanks!
-Boyo
