UPDATE: Josh (and I suspect Brian Meeks) at FR really got the ball rolling for me this time around. Within hours I had a voicemail from a different dealership that is much closer to me and as I found out on a phone call much better equipped (pressure testing machine to find leaks) to hopefully put this issue to bed. I want to also highlight that it seems FR used their muscle to help me jump to the front of the repair line with this dealership! My father has a 5th wheel and he tried getting into this particular dealer no more than three days ago and they said "sorry, we're backed up right now and it will be a couple weeks". BUT, no waiting for me, the service director said he's got a great relationship with FR and wants to help us both out (note, I didn't buy from this dealer but my dad did!). Additionally, when I asked for his opinion on the repair time he laughed when I said the last dealership had it for a month. While he wouldn't commit to timing, I feel comfort that I likely won't be out of my coach for the better part of July while the kids are on summer break.
I'll identify the dealership and update the resolution after I get it back from service. But so far so good...don't know what I'd do without this forum!
Thanks to everyone who sent me direct messages with advice, I really appreciate it!
2016 MBS 2401w