I might contact Jayco (if the dealer doesn't come around to your way of thinking), that sounds like warranty work to me.
I too had a propane leak in one of my hoses up front (one of the pig tails), my dealer (NOT Camping World) supplied the hose, the tape and the fitting, and I supplied the labor. I wasn't going to tow my trailer all the way over there for something I could do myself in 2 minutes, and he agreed. We both came out ahead.
2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)
Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!