I just started on that section. I’m having a issues with trim glue also.Have you tackled the rust on the rear hatch left by the chrome trim piece? My trim piece fell off and there’s some rust but not as severe as yours. My big issue is that hard as crap, old, dried up tape is near impossible to remove. I’ve tried almost everything short of grinding it away and subsequently grinding “good” paint that isn’t rusted.
I can’t get that damn glue off!