Hi all- I would have considered just getting a new one and installing it, however, while my bike maintenance skills are not entirely zero, I haven't installed new calipers or bled lines before. I don't mind learning when the need arises but this bike is brand new. I want to make sure it is done perfectly to start.
As for the issue of Trek vs Shimano being responsible, I had another phone call with the service manager at the shop today and sort of pressed him about it. He said something to the extent of, "yeah, you'd think it would work that way, huh? Unfortunately the bike industry doesn't function like that. Trek would tell us to contact Shimano, which we did, and they will warranty it. They are shipping us a new part. The problem is that no one reimburses us for our labor and we don't feel right charging you."
But, like, that was kind of my point about taking it to my local dealer for the warranty too when I talked to him the first time. I was thinking, why would I make this THAT stores problem? They've got no skin in the game, they didn't make any money on selling me the bike, and I'm supposed to make a problem for them?
The whole thing is weird.