You can use Lacquer thinner - alcohol as long as what you are using will not lift your painted surface. Acetone is the industry thinner / cleaner for resins. As long as there not any wax and the area has been cleaned sanding also works.
Mike Shappell www.themanshed.com TMS-20 Builder G-Cat 5.7 - Current Boat NACRA 5.2 - early 70's
#206669 - 03/25/1008:44 AMRe: Poor Manís Alternative to Vacuum Bagging