I used a WD40 type lubricant on my garage door track this winter and just
noticed it dripped onto the front of one of the door panels. I tried
cleaning it with 401 withoout luck then paint thiner and finally acetone
(after I called the lubricant manufacturer).

Well I think I've gotten myself into a bit of a piclkle because now I've
remove paint to the point where some corners and edges of a small cross
member are showing gray; I'm pretty sure that's base metal.

Bottom line: Looks like the door is powder coated (painted) and I've removed
enough to disturb the asthetics. Area is the size of a softball.

Question: Repair suggestions?