I've started the body work on the TR3. I'm stripping back to bare metal. My first project is the passenger door. I've been sanding the old paint/primer/bondo off. So far the door is in good shape with minimal bondo(what looks like an appropriate amount for well done body work. My problem is that I'm working in the evening after work and its taking me a while for each part. In the meantime the South Carolina humidity is flash rusting the sheet metal. I'm planning on taking this one panel at a time(at least to the primer stage). Is there something I can do to stop the flash rust? Or should I just leave it and sand it off right before I prime it?