What you need:
Paint thinner
A disposable glass with water in it
Hard bristle toothbrush or pipe cleaners
very small knife
thumb tack or needle
Safety glasses, gloves, and breath guard (If you're into the whole WHIMIS thing)
Take the toothbrush and dip it in the paint thinner, vigorously "brush" the mini down. Rince off toothbrush and mini as needed.
The knife can be used to scrape off clumps of paint, or get into grooves that the toothbrush will not reach.
The thumbtack can be used to scrape out cracks or crevaces.