I used MMP to paint my U.S. Army Chaparral in Olive Drab. I followed the MMP instructions for thinning the paint. I had no problems at all. No tip drying, no clogs, no problems at all. Paint went on smoothly and held up well when I handled the model. I cleaned with tap water then some of their thinner\cleaner. I tried MMP after giving up on Vallejo paints. I had such a horrible tip drying problem with Vallejo even though I used their paint, their thinner, their instruction, and added a retarder. Yuck, I'll never use Vallejo again. MMP worked really well for me and that's the paint I'll use in the future.