Back in 2004 I replaced the hinges on my ailerons. I used
paint stripper from Home Depot [
homedepot.com]. In my case the stripper did a great job of getting rid of the old paint. I used a 3M Scotchbrite pad to help the chemical along in some spots (wear heavy-duty rubber gloves! And a respirator! And do it outdoors!)
I then primed it with Tempo Zinc Chromate and finished it off with Tempo white paint, both aerosol (spray) cans. It looked better than the 40+ year-old paint on the rest of the plane.
(However, it seemed that the paint was beginning to get weathered after a 6+ years of constant outdoor exposure. If you have someone that can shoot it with a better grade of paint, I'd go with that.)
Finally, I suspended the aileron from its (new) hinges, and made up a simple beam and some lead fish-weights to check that the aileron balance was still correct (check the service manual). As expected, removing old paint before adding new had a net-zero change.