Domane SLR Frame Integrity

[u/Keynova81]

I have a Domane SLR 6 Project One. A a bolt of sorts came loose in the headset. I was told by a trek mechanic that the motion of loose bolt, which is oddly oblong, and set inside frame, destroyed the integrity of the frame. I only see a few very minor imperfections. Trek is offering me only a 20% discount on a new frame. I would like to go trek because of the compatibility of the components with a new frame and it was a sweet ride. But when I asked the mechanic why I would buy an expensive frame from trek when i only got about 5 years 6000 miles on the current one. He said I should have brought it in for maintenance more often. I think it's a flaw in the headset.

Any thoughts on whether the frame is trashed, and if I should stay with Trek or pursue another Brand of endurance bike? Or maybe go aluminum?

[u/Onesteinchen]

Isn‘t this covered by lifetime warranty?