We highly recommend that you keep the plastic protective sleeves you get on the rails when you receive your MYT. They slide in very easily when you hold on one side and push gently downward against the rail. They will protect your rails during transport but also on location when not in use. We also recommend that you leave the protective sleeve on the bottom track when not using the MYT Dynamic plate. If you loose the protective sleeve, contact us and we'll gladly send you some at no cost besides shipping. If you want to check how to proceed with setting up the protective sleeve, check out our video describing the procedure on our Vimeo page.