i have a 2002 GS Independence with the Dewald hydraulic system for the 4 jacks and 2 push-outs installed. I had all 4 jacks rebuilt at a shop where companies bring their hydraulic rams for repair/rebuild. 2 of mine were leaking by and not staying up or down. i wasn't going to get just 2 rebuilt, so i had all 4 rebuilt. I found replacement jacks for about the same price, as rebuilt, but the mounting hole pattern was different and the steel was very tough. So it would have been very difficult to re-drill the mounting hole pattern. I had the ram for the main room push out rebuilt also. It was still working but, I could hear it leaking by. Problems solved, but it was about 290$ each. Also note; the Dewald hydraulic pump assembly is not supported any more by anybody. I couldn't find solenoids that didn't leak and worked properly. LSI has a replacement assembly that is a good replacement for the Dewald. It came with a self leveling feature too.