I'm going to try to get to pulling the back cover this weekend if I have time. So with out taking the cover off how do I know it's a posi or not? So far I found these numbers on the long tube. 2HLC312 1. I tried looking it up on differant sites with no luck. With the drive saft off I turned the 3rd member flange and both drums turned in the same directions. If I turn one drum the other side turns in the opposite direction.