Do it Dave! I'm glad I did this job on Kimi 2, before it got really bad underneath:
Before cleanup - I didn't take a post cleanup pic, but it was a devil to remove the rust and grot that had imbedded itself in the lacquer!
I did end up having to rattle-can spray the left hand side though. I did end up putting quite a bit of "3M" type clear film under there to protect where the fixings might otherwise damage the paintwork. Sadly, no pictures.
After dremelling the rust off the fixings, prior to full POR-15 treatment.