Popup Camper Top - RR corner won't completely lower / close

BRAVO !! Persistence Pays Off

Ok everyone, we have found the issue and have at least temporary fixed it. My wife actually found the issue and fixed it after I was going crazy.

I removed the plywood covers over the wench / cables and I didn't see anything obvious. However, my wife noticed that the 4 cables were twisted together - I had assumed they were supposed to be that way. One of the cables had become "frayed" and a couple of strands were broken can causing them to all become twisted together. We untangled the 4 cables and put electrical tape around the problem cable to temporarily keep it from grabbing the others. I do plan to replace the cable but the important thing is that all 4 corners are returning back to the right height to close up the camper.

'I wanted to be sure others knew the "fix" as I had a hard time determining what it was and there is not much information on this issue on the internet.

Thank you all for your ideas. I do appreciate your replies.

I know they have manuals over at popupportal.com you do have to join to download but it's free.
Link to manuals

Never tried to take one apart before but I seem to remember seeing a diagram once where the tubing has a pulley at the very top. Could there be a bolt that holds the pulley and it's backed out of the hole and stopping it from going down?

Thanks for the replies. this was an issue when I bought it used a few months ago and I assumed it was just something easy. There is nothing obvious in that area as an obstruction. The dinette in in that area and it collapses down. I have ensured nothing is in the way. I take it down slow and feel around / push in the tent material as well. I have had 2 other popups in the past so they are not new to me. When it gets around 1" left, it is done. no movement.

anyone know how to take that apart? There are 3 pieces of square tubing inside of each other that raise and lower together.

thx!

Lift it completely back up and start over. As you slowly bring it down, keep stopping and keep checking for obstructions. Take your time. Something is not lining up right and you are going to have to determine what it is.
Edit - What's in the rear corner? A sofa? Are you sure that it's as far down as it goes? I once had a sofa not collapsed correctly and had this issue.

Thinking again, on my old popup it never comes all the way down and I have to push it the last few inches down. Can you push the corner down on yours? Or is it like a solid stop and not going to close?

First thing I can think is are you sure the problem is inside the lift support? Could it be something simple like some of the tenting is caught up and not letting that corner come all the way down? Have you already lifted it all the way back up and then inspected around in that corner for something like a cabinet door open, or a kids toy left out? What about underneath the camper? Can you see the cables and does the cable go slack yet the corner still wont come down?