A tip of the hat to Aaron Knight of the George Knight company for a great suggestion. My current platens, and especially the most used "mid sized" show their age, especially the rubber pads lifting. Because of the way caps are loaded, there is a tendency to put a lot of wear and tear on the corners which subsequently lift from the die-cast body. I've never had good luck re-attaching the pads, though RTV Silicone Adhesive has been suggested.
Aaron told me that many have solved this problem by wrapping the pad with fabric from a polyester performance shirt, both easing the loading and preserving the corners! I cut a hunk of old shirt, stretched it over, and wrapped a little duct tape around the base to secure it, and VOILA! What a difference!