Found that the Shaft & Tube Assembly was shot (shaft wobbling). Replaced the shaft and tube assembly (including the tub seal). Also opted tp replace the Hub Nut, Tub Bearing Split Ring, Tub Bearing Washer, Hub Washer, and Drive Belt to bring the complete drive back to new condition. The tub bearing proved difficult to pry out from on top so I drove it out by hammering from below using a wooden handle that was of the correct diameter.