I’m putting new core-tec HD planks in the rear of my trailer. At the back door I install a metal track with a rubber cap. The rubber usually holds up for a year or less then it gets pulled up and tears. It doesn’t seem like the cap ( vinyl?) doesn’t hold up like it used to. Any time I try to remove a cap the stem rips off in the track, and you have to dig it out to put a new cap in. Anyways... I thought of filling the track with silicone , in hopes of of it lasting longer. Anyone ever try this?