Glad you have several videos on installing the Twin SofStop, and no videos on the single SofStop. Then the manual doesn’t explain it either. The manual refers you to a video of how to install a Twin SofStop. Overpriced products with not very well laid out instructions.
Hi there, if you are referring to the Mount Plate location, you can find the specifications on page 12 of our installation instructions: www.cavitysliders.com/Portals/7/PDFs/Installation%20Instructions/CavitySlider%20Kitset%20Installation%20Instructions%200823.pdf If you have any further questions, please reach out to us at (888) 466 0030 or email us at info@cavitysliders.com.