There is no manual slide screw - BUT do not dispair, there is a very easy way to retract the slide. Just disconnect the battery and all power from the trailer, then just firmly push the slide to the stowed position. Reconnect - Again RECONNECT the battery as it provides the BRAKE which holds the slide stowed for travel. I looked ALL over the place for a manual retraction device, only when I spoke to the mechanic at the dealer did I find out this is the only way to manually retract the slide. I tried it today and IT WORKED flawlessly. Just don't try to "shove" the slide back in. Just steady pressure, maybe with a helper, and it just slides right in.