Hi - I consider myself a reasonably experienced DIY painter, but every so often (it just happened yesterday, as a matter of fact), I am faced with a problem that I can't figure out: I open up a partially-full gallon can of paint, stir it from bottom up for a minute or two, pour it into the roller pan, load up the roller, start painting, and lo and behold there are small chunks of paint on the wall and in the tray. None are very big, and I call them paint "scabs". when I pull them out, they feel rubbery. The can I used yesterday had last been used a couple of months ago, so it's not like the stuff was sitting around for years. The guy at the paint store said I probably didn't stir it enough. I store my paint cans upside-down, on a suggestion from the same guy. This has happened to me a few times over the years, and never on a can of paint that has been suitting around for a long time. The chunks are not coming from the roller tray, because I wash it out after every use (I know, extra work that I hate, but I do it). Any thoughts or suggestions? Thanks Dave

I just came home to my parents' place to check out the work they had done. Apparently, the painters they hired said that the outer edge of the trim/frame around the windows and doors in the interior of the house ought to be painted the color of the wall rather than the color of the trim itself. The trim is a dark brown and the wall is an off white. It seems incredibly unintuitive to me that the edge of the trim meeting the wall should be off white (the color of the wall) and not the brown color of the trim. Shouldn't the entire piece of trim (including the edge that meets the wall) be one color? Are these painters clueless or am I? Thanks!