Go to Lippert's website under Customer Service/ Support Center. They have videos, technical manuals, operator manuals, and drawings of their various slides. Don't know which one is yours, I think through the frame electric. Might be worth checking out before the tech gets there.
2013 Palomino Columbus 320RS
2007 Dodge RAM 2500 6.7 Cummins
Reese 15K manual slider
M.I.L. in Florida for good!!