You said back together did you take the hose off and put it back on how far did you go?Now this is really wierd.
Truck is back together, and I drove it for a couple days, and then let it sit for a couple of days. It hasn't leaked since.
So, it sits for a week or so, it leaks, but if I drive it, no leaks.
I'll probably still end up tearing down into it, but does this clue point me in any direction?
If you took the hose off and put it back on that may have been it! Bad connection made good when re-connected!