I am happy to report the source of my problem (OD not sending power to rear wheels) has been solved. The over-running clutch in the OD planetary drive has 2 tabs on it to prevent over rotation of the cage. These 2 tabs had broken off of my bearing cage. This allowed the rollers to rest in the cavity between the ramps on the bearing and so would not catch and lock up when driving forward. The light springs are not strong enough to 'lift' the rollers out of the cavity. The cage is heavy enough to allow new tabs to be welded to it, shape them to clear the bore and the bearing, over-running clutch can be used again.