On 62s (I assume 60s also) there are two gaskets stacked on the tail light housings and lenses. The inner gasket (the thin foam-like one) on both my tail lights is all torn up and tattered. The outer, rubber gasket is still in good shape, but the inner is shot. It's also NLA everywhere I've looked. Is it really necessary, or have people just been removing them with no ill effects?