That Yo! album was mainly produced by Bill Stepney. Chuck, Hank Shoklee and Eric Sadler I believe were less influential than on later albums. I think that Rick Rubin had an Executive role on both albums before he left Def Jam (major loss IMHO). That was the beauty of that Def Jam sound up to 1987 as it was so raw and gritty. My favourite track was always the title track. When I got the album, looking at the cover I was like, 'what the hell is this?' It was menacing looking, brilliant content and great to see them in concert in 1987.