[evldave]

This is exactly what happened to me at about 15-20k. It ended up being air in the brake lines - the dealer had to bleed them 3 times before they were fine. I'm still hyper-aware of the issue, and sometimes it feels like they are getting squishy. Most dealers have a fancy machine - it takes them all of 15 minutes! I'm taking mine in for some other warrantee work later this week and will ask they rebleed them.

Keep pushing your dealer. By the time I was able to get in the dealer (mine started in California and I live in Washington), I was on long grades and almost completely out of brakes...if your problem is the same as mine, it will get worse and you will likely end up out of brakes. Hope this helps