George, while I don't think I am loosing any coolant - been monitoring that since I flushed the system this spring - for peace of mind a hot pressure test wouldn't be a bad idea. Gives me an excuse to buy a new tool.
Riding the motorcycle into work this morning I was quickly reminded there is just enough regular humidity in the Carson Valley that you notice it even in the middle of summer. They tell me its the high water table along the west side of this valley. And as I thought about it, every bike or car I've had has spat out condensation on a early morning startup, year round. So, if a presure test doesn't reveal anything I'll chalk it up to condensation.