Just got done doing complete tear down and rebuild on my 54 olds transmission. Sure hope I put all 4,325 pieces back in the right spot and this is my last question. Someone familiar with these help me out please. I have adjusted both bands internally per owners manual. Front band sits loose on drum and obviously engaged by front servo to tighten band. My question is with the rear band. When I adjust the rear band (tighten) using the gauge to the correct location the band feels really tight and drum will not turn at all. Once everything pressures up does the servo loosen the band? I would assume both bands should be loose until pressure is applied and not one loose and other tight. During disassembly it does tell you to loosen rear band adjustment before removing rear servo. So obviously there is some sort of tension on it. I have heard rumors of a hydramatic group but whenever I click on the link i always get a hamb error. If anyone has any questions I will gladly help out with what I've learned so far.