On my 02 Tundra when I installed Frost King 1/2 Caulk backing rod the dash rattle stopped. 2 weeks later the rattles came back and the foam is rectular shaped compressed. When u guys install it do you guys try to shove it so it is under the dash where you cannot see it. I installed it so it is visible between dash and windshield. Should I try one size bigger which I think is 5/8 of an inch???