Whenever I reload my map some of the brushes get a little bit messed up. Imgur won't embed in the preview, so I'm playing it safe and linking instead. Before I reload, all those little edges are squared up and look great. Afterwards, though they get moved slightly off. I'm pretty sure my brushes are convex when they're in the right positions, so I don't think that's the problem. Of course, they could just be ever so slightly convex and I'm just missing it.