The bedroom slide has moved/migrated from the centred position to a more forward position. Looking at the slide from the outside, the left side of the slide is almost tight against the opening at the front of the trailer while the right side is so far away from the edge that the rubber seal is barely touching the slide. My burning questions are, 1)"How do I re-position the slide so it is centred in the slide opening?" and 2)"Why did it move?"