[bluetoy]

I already have 2 layers of blueskin foundation sealer on everything. its heavy, thick and really stuck on there. I found not much difference. I need some good sound deadener because it is affecting my hearing. My truck is plenty quiet but there is a resonance between 1200-1400 rpm and that is where I usually run the engine. I've added the quietest mufflers you can buy, still the resonance. I'm thinking it is the frequency that the Aluminum cab likes thus making it worse. I don't hear any road noise and hardly any engine noise. It's just the resonating. No one hears it but me. I also sit in there 10 hrs a day. I think I'm gonna have to spring for the Dynamat. I've never had much luck with products that claim to be better for less money. They all compare themselves to Dynamat so it must be the best. Why else would they compare to it?