I'll check those places... once I get a decent blacklight pen-light. All I've got at the moment is a big-ass blacklight that I can't fit into small spaces.
Oh, this? ^ Yeah. I should have asked about that before I authorized the work. I asked what kind of guarantee they had on their work when I showed up to pay for it, and dude said "Well, all we did was evacuate it and fill it, so there's no warranty. But hey we put dye in, so we can find it next time if it does turn out to be leaking."
My own dumb fault, I know. So hard to find a good shop...