Microflush Toilet

How many others have these? Of those, do you do any kind of maintenance on them?

I awoke at 5am today to find the toilet bowl had overflowed and the air on constant in the potty. My compressor was going mad trying to fill the empty aux tank. I'll cut out the long story of my morning and cut to the quick, the air/water sequencing valve needed to be lubricated, or at least it fixed the issue at hand. I don't know if I have/had moisture in the air line that froze causing the problem or if the valve seals were just so dry that it caused this to happen. Anyone else?

I have the manual, I'm going to go read it now, so no RTFM comments from the peanut gallery. :)