Roof trims...anyone changed them themself?

[derin100]

Strangely it's only on one side...but my passenger side roof trim is bubbling under the black paint ( the driver's side looks pristine and there's no warranty record of it having ever been changed).

Looking at the warranty exclusions these would appear to be excluded although I am aware that in the past they were replaced under 'goodwill' (like kick-plates).

At over 7 years down the line 'goodwill' gestures may no longer exist so I was wondering if anyone had replaced one themself and if so was it difficult and how much was the part?

TIA

Derin