Leester,
Tough problem. I get paint filers from the auto paint shop I use. Every time I go in and buy paint, they give me a stack of them. I probably have 50 so I'm set for a bit. They sort of look like funnels with a screen in the bottom.
As far as the globs. it depends on how bad they are. With something like maroon, you sort of stuck because the color is heavily dependent on thickness. The thicker, the darker. You can try to use some 400 or 600 paper and a small sanding block and very, very lightly take them down to surface. But you will probably end up with discoloration and need to re-shoot those areas, or perhaps not if you don't get too thin. This is one of those times that there is a lot more art then science involved. But if they aren't too bad, you can often just shoot some clear over them with a lot of thinner and they will relax and level out on their own just fine. It just sort of depends on how big they are.