Len S
Convert it to what was used on the Quiet Line models. Replace your hub and pin with the Arm, Coupling; Disc, Flexible Coupling; and Flange, Driveshaft. These are items 2,3,4 on a hydro Quiteline parts breakdown, and the last one I did the parts were cheaper than the pin and coupling for your 149. The flange comes with or without the bronze bushing (you need it) and it WAS cheaper to buy it one way than the other. I think it is cheaper to buy it with the bushing installed than to buy the flange and the bushing, but I don't remember. You will also have to drill a new hole in the driveshaft for the pin in the coupling arm. This will end the hub and pin wear problems.
Convert it to what was used on the Quiet Line models. Replace your hub and pin with the Arm, Coupling; Disc, Flexible Coupling; and Flange, Driveshaft. These are items 2,3,4 on a hydro Quiteline parts breakdown, and the last one I did the parts were cheaper than the pin and coupling for your 149. The flange comes with or without the bronze bushing (you need it) and it WAS cheaper to buy it one way than the other. I think it is cheaper to buy it with the bushing installed than to buy the flange and the bushing, but I don't remember. You will also have to drill a new hole in the driveshaft for the pin in the coupling arm. This will end the hub and pin wear problems.