Just curious, to those of you have had problems with the skirts falling off, how often to you take them off? Because I had my one initial problem, but that was my own fault for not putting them back on properly. Since I have the skirts off once every week, or two at the most to clean and I've always double checked that they are securely fastened. Never had a problem since. Maybe they just need to be checked once a month or so. I can see how the half twist screw could unscrew itself from bumpy roads.
Watch, now I'm going to loose one tomorrow.