Help with Slide on Gulfstream Endura 2004

Can anyone help me? Several weeks ago we were away and when we went to leave realized our hydraulic line had broken. We were unable to raise the lifts or pull in the slide. We called Good Sam and had a mechanic come out. Unfortunately, he did not have the right parts (the connector wasn't a high enough PSI to work) so he did the best he could. He got the stabalizers up but had to disconnect the slider and physically push it in. We have since had the hydraulic lines replaced and the stabalizers work, but they can't seem to get the slider to work. I've had it a truck workshop who did the hydraulic lines and now it's at an RV shop, but they haven't had any luck in a week. I just don't know where to go or what to do. Any suggestions? I had planned on using it in less then two weeks. I don't see anywhere on it that we could even manually push/crank the slider out for use.