Don't know for sure about your rig but on the coach I had previously (04 National) and the coach I have now I was able to raise the slides enough to get under them by running the slides out, placing a 2x4 across the bottom of the slide next to the coach held up by a 2x4 placed vertical on a floor jack. I was then able to use the floor jack to raise the slide enough to work under it. If you do this be very careful since if the jack post slips you could loose a hand when the slide drops. To be safe once you get the slide raised place some boards under it so it can't drop and take off a finger/hand.