Hi Steve! Sorry I'm so long getting back. They say the mind is the second thing to go after 40 (of course if you have a 5k the hydraulic system is the 1st<g>). The proportining valve pn I have (& this may be unique to the aftermarket) is 803-612-303. The last price I show is $198 retail, sb about $100 aftermarket. Hope this helps. ned bennett