I'm trying to remove my propane tank to replace the valve on my '87 Westy and am
having a difficult time removing the tapered nut that connects the copper tube
to the tank assembly. Every twist with a wrench results in the whole assembly
turning. Any suggestions? Note: I don't believe it's ever been removed before,
but  have loosened the bolts holding the tank to the vehicle thanks to PB Blaster.

In VW Love, light & laughter
Jay
'87 Westy,"Ol' Blue,"  327K