The power boxes are done on an exchange basis. You may be able to deal with someone like C&M Hydraulics to have yours rebuilt if the numbers on the box and data card are your issue with wanting your specific box. I would not count on this though, since I've heard that C&M usually does business through retailers only--worth a try though. An alternative is to try the rebuild yourself with a seal kit. There's someone on ebay selling the manual that describes the rebuild process and the tools required to do it. Not particularly difficult but you run the risk of finding some worn/broken parts inside that may not be so easy to source as the commonly available items such as the seals, bearings, nuts, bolts and washers. Hope this helps.
George Desiderio