Installed a Bakflip x4s cover on my Rambox short bed. I tried installing it before but found a rivet incorrectly punched in and prevented the cover rail from sliding into the box rail. I called the company and they were nice, sent me two new rails! The other rail was fine though. So I unpack the new rails, and guess what. Same deal. Luckily I have tools, lots of them. Proceeded to fix the rivets to allow the rails to slide through. Then found out both of the rails stuck out too much. The sharp edges took a little bite into the plastic top of the tailgate. No problem, I went and cut half an inch from the rails. (And yes they were all the way in, touching the bed bulkhead).
After all the manual work it fits and I still would do it again. I like the roll up nature of it. BUT If you don’t have the tools or “know how”, don’t buy this setup. It’s not “plug and play” due to these design flaws.