I am a personal frneid of Gary Richrath's. I have had some of the most in depth conversations about REO that you could imagine. On the albums that Gary produced, Kevin's voice was doubled to add strength, and compressed to make it presentable on a recording. As for REO not playing Good Trouble material, it probably has more to do with the fact that the album wasn't really that good. If it had more than Keep the Fire Burnin as a big hit, they'd play more songs off of it.