I have pushed in/out the slides after leveling and have run into a problem. My diagnosis of the problem seemed to indicate that after leveling, our coach may be slightly twisted because of the three-point hydraulic leveling and/or because of the ten airbag leveling... likely due to being parked on a "pad" that has an end-to-end or side-to-side "twisted" surface. I remember one time, in particular, that the street side, living room slide caught on the rear high corning when coming in causing the slide to twist as the hydraulic ram/s continued to push in the top and bottom front corners and rear bottom corner evenly. Because the rear high corner stopped moving, the rear of the slide started to buckle up and cause the whole slide to start twisting. I always face the slides when I move them in and out. Thus, when I saw the rear upper corner stop moving, I immediately released the toggle switch and pushed the slide back out. Luckily, the three corners that continued moving in had only moved a few inches after that rear upper corner stopped moving. I take special care after that event to move the slides in/out per the manual. Slides out first and in last, both done while the coach is in travel mode.