*High five! You're one of the few people that do sound deadening and insulation right. It always takes 3 stages to do it right. And great job on not covering 100% of the butyl on the surfaces since only about 35% coverage is needed before the rest goes to waste. Then the goes the decoupler, and finally the good heavy stuff on MLV. I see far too many people just slap on butyl 100% coverage and think that will block the noise. Its just a way for the material companies to make more $.