My Last local BMW dealership
The OP's situation where his dealer didn't just say "sorry, you're out of warranty" is true test of their customer service.
A&S Powersports in Sacramento is the same way. I feel fortunate to have them so available. And, their Parts dept. can get anything you find anywhere, and they price-match everything. Maybe that's why they win BMW Customer services awards.
Good to hear others having the same experience.
2013 R1200GS K25 (Camhead) Triple Black
2007 F650GS Dakar
“Life is what happens to you while you're busy making other plans.” ― John Lennon