*FINAL UPDATE*
I've been trying to find a fitting for this pipe for months and couldn't find any supplier who had anything that would fit this pipe. Most of the ones I talked to said it would be easier to re-run the line with new and STANDARD fittings, which is exactly what I did. Took my only two evenings (was pretty simple actually) and a couple trips to a plumbing shop and as of yesterday evening, my propane fridge is up and running!
I REALLY wish that I'd had just done this from the start as it was much faster and simpler. Thanks to everyone for your great tips and feedback.
TLB
