I would like to know the best way to completely remove paint from a model. I got some old already assembled kits from ebay the other day and they look like a 2 year old toddler painted them. And they used a brush to paint the with. If I spray paint over the old paint it will bubble up and look even worse. I want to remove the old paint first. I need to know the best way to do that and get it off of the bodies and even the windows. Any suggestions? One of the car's windows are covered in silver paint.