My TT had a defective table top discovered during the PDI. My dealer (in Middlebury) submitted a warranty claim with Jayco (in Middlebury) and POOF! roughly 2 months later I had my table top!
My sofa has a defective back and a couple of other minor issues. Just before Thanksgiving, I took it in to my dealer (here in AZ). Last week the dealer received two back cushions! The sofa back was reordered.
As far as I know, dealers don't stock parts and neither does Jayco. Jayco has to go through their warranty claim approval process and then, in most situations, order the part from their vendor(s).
There was a recent post about Jayco expanding their customer service department. That may not help you, but it seems Jayco is trying to improve things in that area.
Sherm & Terry w/rescues Steve (std Poodle) & Eydie (min Schnauzer)
2015 Jay Flight 27RLS (Camped: 102 nights 2015, 90 nights 2016)
2006 Ford F350 6.0 PSD, Lariat, 4WD, CC, LB, SRW, auto., Camper pkg.