Modern Vespa

Just about to take on a paint job on my '85 PX, and first thing is to grind down and deal with the rust that's there. None of it runs deep but there's a lot (typically) in the running foot board.

I realize I need to grind down, fill and prime before painting, but does anyone have any tips on any products they have successfully used to guarantee the rust won't come back through?

Rust never sleeps......Get some etching primer and spray that on the bare metal. Try to do it on a dry day.

paint the scoot in red oxide and call that it.... easy to touch up