Ralph,I believe you are describing the Masquerade frame that is 16.9 due to your description of the top and bottom going up and down.I have the 2.35.1 version with the top and bottom fixed and only the sides going in and out for the different ratios.Does this change things?
Here's an article discussing the system: https://www.projectorreviews.com/carada-2/carada-masquerade-cih-review-a-motorized-masking-system-for-your-projector-screen/It looks to be the same as Ralph's, but instead of the rails being on the left and right, they are on the top and bottom. Same concept but turned on its side.
...just an update: I purchased the Stewart GrayHawk G4 wall screen plus...the installer will do the following:1) remove the Carada Frame2) remove the Carada Screen3) install the Stewart Screen4) reinstall the Carada Masking SystemI'v lived with the Carada screen for 7 years knowing it's problems and can't wait for the Stewart (the company rep. stated it would be shipped October 8th and that I should get it possibly the following week)...
David,I'd love to take pictures but, at 79, and not up to the latest tech., I have no way to do it!!Sorry,...and, yes, I do hope to see a remarkable improvement.Ed