I have a Husqvarna YTH22V46 with a Tuff Torq K46 transmission. It was due for a rebuild which I did. After sealing and filling with fluid I tested the transmission on the bench with a drill. One of the axles turns fine in forward and reverse. The other axle begins turning in both directions but slowly stop after a few seconds. The process repeats every time I start/stop the drill. For the life of me I can't imagine what's causing this. Any ideas very much appreciated. Thanks