Propane Pro Pain

                       I wanna tell you about one of my propane tanks because it's like an episode out of the "Twilight Zone" .   I had both the tanks filled, as per usual, but when I brought one of the tanks down into the Tools' Room, it started to leak .  As kwik* as I could I brought it back up and outdoors to prevent an expLOSION .   It stopped leaking .   WTF ???!!!  After a day I tried again for no LOGICAL Reason and the same thing happened---so now I'm figurin' that [relative] warmth was the cause .  thing about THAT was in all my years dealing with propane tanks {BBQ grille size} I never had a tank that leaked, I mean NEVER .   Another day expired and when I picked it up to re-position it to a safer location, the tank had NOT leaked and was "FULL" [for the most part] .   I had a "FULL" tank that was UN-usable .   "Uhh, Houston ?  We have a problem."