How did you support the shaft to not damage the impeller on the press?
Most presses have free moving adjustable plates. Use those plates to just support the back of the housing level and stable with the impeller being protected. The pulley mounting plate moves quite easily when the press is bearing down. Just place a socket over the shaft so it doesn’t get pressed. Does that make sense? I wish I took a pic when I did It. I still have that other one to do so maybe I will then.