When an RV tech came to address the issue of my roller breaking and the slide digging into my kitchen floor, he adjusted the inside height between the floor and bottom of the slide at the adjustment points outside under the slide. He loosened the bolts and adjusted the verticle bolts at the end of the rams. This increased the space between the slide and the floor. Keep in mind that modify the adjustment to much may effect the operation and sealing effectivness of the slide.
2007 38Rl3 MS
2005 Chevy 3500 4x4 5" Exhaust, Edge Attitude Tuner, Airaid Intake, Air Bags, Rancho Shocks, Hellwig Big Wig Sway Bar