In search of a spacer plate for a hydraulic oil pump for a B2400 hydrostatic transmission. Part number 590 circled below. Took the pump apart to change the o-rings before re-assembling my tractor and found that it was damaged pretty badly. I can order the pump rotor assembly and outer housing but this spacer plate has been discontinued. I have been calling all around the country and cannot find one. If I can find a used one in good condition I'm more than will to purchase and pay to have it shipped. Any help is appreciated. Thank you.