Slide out

A slide is all the way in when it sits almost even with the outside of the RV. Neither the top or bottom should be kicked out from the side. Generally, if everything is in working order, when the slide gets to full "in" position, you'll hear a clacking sound which are the gears spinning with nothing to do. Stop holding the switch at this point.

A slide is all the way out when the slide seals are pressed evenly against all of the inside walls. This keeps water, wind, etc. from getting into your camper. Similar to above, you'll hear the gears clacking when you reach full "out" position. Stop holding the switch at this point.

There are adjustments that can be made to any slide to make it fit better when open and closed. I'd have to refer you to your manual or a dealer to figure out those details.