Well, last week I ordered 15 feet of under carpet padding from Pro-Tech Mats. This is the standard 1/4" thick mat. It can be bought in custom thicknesses. Wife bought me a new carpet kit from Allison. Now that I have the padding this weekend i'm gonna start pulling the old stuff and scraping the old glue out. I am going to use wood weld contact cement. I call Birdsong adhesives the recommended adhesive for the padding and they don't sell it in anything less than 5 gallons at a time. The guy I talked to told me the wood weld would work just fine. That it was very similar to the their adhesive. Ill make sure to take some pictures to share with those of you who may want to tackle tis in your rig later on.
http://www.protechmats.com/Pro-Tech-Deck-product.php
http://www.protechmats.com/Pro-Tech-Deck-product.php