Thank you, thank you, thank you, Radio.
I just came in from adjusting my slide. It wasn't rubbing quite as hard as yours, but in the colder weather it was having a tough time passing the window on the front of the slide. Moved the slide back about 1/4", problem solved.
Without your pictures, I'm not sure I would have attempted to make the adjustment.
Out slide mech is an M-Tec and is a little different than yours, but the same adjustment was possible. and Yes you can adjust them up and down.
Thank you one more time!
2007 Rockwood 8315SS Sold 11/19
2014 Silverado 2500HD 6.0L Sold 11/19
Back on the road 10/20
2010 Born Free 22RSK