There are some environmentally friendly aircraft paint strippers that work great as long as you do small areas at a time. If necessary cover with a plastic wrap to keep the area from drying out...then scrape the residue off with a plastic scrapper...repeat if necessary. Biggest issue is always around the rivets. The 1-23 wings were profiled with a lot of body filler. Here is a resource for paint stripper: http://solventkleene.com/Dzolve15R.html

Someone once said to me "the best way to remove the paint from a Schweizer is to fly it until the paint has peeled off" because once you go down the refinishing route.....it's gonna become a multi-year project for the club.