I am in the process if preforming a light auto rebuild to my automatic transmission. I was cleaning out the shaft area of the transmission and noticed a gasket around the rear shafts. I can't seem to find it in the DMCH diagrams to replace as I am trying to avoid any leaks coming from the transmission in the future. Is this something that is worth replacing-or notorious for leaking? I am guessing that is part # 103578.
-Robert