Originally Posted by MR.M
It appears in the pictures the bottom is further out then the top ? if so syncing won't help . the motors need to be raised out the there holders and the bottom and top lined up same distance out . then reinstall motors and sync
That is the Schwintek system. I attached a picture of what the LCI Power Gear SlimRack looks like. On mine, the gear teeth rail is black. The rail sits out and away from the slide wall by a noticeable amount. That lets it float as the slide moves so the teeth can stay engaged with the motor all the time.
Counting the screws and the looking at the position of the inner-most one makes me think the top and bottom are out the same amount. The inner vertical side of the window also looks parallel to the wall. The angle may just be because of the camera lens and the distance difference.
As noted, there are a number of videos on syncing the Schwintek system on YouTube. I've never owned the Schwintek system but Bama Rambler's note is exactly what I remember reading and seeing.
The slides can pull a lot of power so make sure you're on shore power, have the generator running, have the engine running, whatever your owner's manual says. Some units say you need to have the engine running and some have a lockout so the slides will not move if the engine is running.
Also note that a common problem with slide movement is weak coach (house) batteries because of the current draw needed. Make sure your house batteries have the correct water level if nothing else. If they're the original batteries they're probably 4+ years old now and may need replaced.