I've had no problems that regular cleaning and maintenance can't solve, including my gear head, wich might possibly be even worse. The thing to do is to keep things clean and dry. Normal lubrication (for parts that need it, many tripods can be run absolutely dry) is a grit magnet and tends not to lubricate, but rather form an abrasive paste. I keep my stuff dry lubed for the parts that need lube, like my gear head. It's for guns and stuff, works well. Blowing out sensitive areas with the air can is something I also do.