I'm converting '71 E body buckets for installation into my '70 Dart. I ordered new Legendary covers and found some '70 metal hinge covers and tracks ($$). The foams look pretty good. I was thinking I would install new burlap under the foam. Has anybody put something over top of the foam ie muslin, foam, etc.? Any details or words of advice on doing that? Just thinking ahead as the covers are still months away.