All on firm. I have the orginal off road GM .750 wire 550# rate springs in front. I have always felt firm was the best there. I have always set rear to firm since day 2. The rears are not the drag shock , but the 80-1953 . Front are the 80-1914. All are fluid shocks.I believe mine have three settings too and when mounting them I put them all on medium and have not yet experimented with changing them. The ride is now firm but not uncomfortably so, but going over railroad tracks is interesting.
zdld17 - Do you also have your rears set on firm? I'm not sure after reading your message.