I'm sure some of the Apache die hards know more than me, my memory of ours is going on 30 + years...I do remember though having to replace the gears for the lift system. They would strip out. The panels were expensive to replace I've heard, never had an issue that I remember. You didn't get the open feeling of a canvas pop up, windows were small. things could still get wet in the rain putting up or taking down but was easier to control. Setup was fast, well faster than a canvas pup IIRC, Seems like I could set that thing up in 10 minutes, again could be glamorizing things with age because I loved that pop up. I do wonder why no one tried to copy that. I guess between the A frames and canvas pop ups the market would be slim, but the old ones are cool and love seeing people still using them.