if the rust is on the bottom of the hood, I would sand it down and give it a quick spray with some self etching primer to prevent it from spreading further.
i think im going to have to sand down the bubbles and have it repainted when the weather warms up. There is also noticeable rust around the wheels and on the door trim (black part). All is very minor (except for the hood stuff which has a small crack in it) so i think this summer my mp5 will look a lot better.
I got rust happening on my outer door pillar. I guess ill have to buy another Pro5 for cheap when its time for parts or something. Hopefully theyll be going for super cheap.