QUOTE!
I’ve read a lot about the slide bars underneath the slide being the route cause and am looking into upgrading to some rollers maybe this summer when we get a stretch of non camping weekends.
I highly recomment putting rollers under these types of slides! Whatever engineer designed that much weight to "slide" on that %^%$! bar underneath should be..... I had to filter myself, sorry.
I used a stud finder to find how many aluminum supports were under our 12' slide (Croosroads SUnset Trails 291RK). each end and center so 3. I was planning to put 5 but no sense in adding where no support. It was not that bad. I found several YouTube videos. Cut the seal and jack room up about an inch and support. I used a battery powered recip saw (Sawzall) to cut that bar wide enough for roller bracket to sit flat on floor. Then I used 3" decking screws to attach rollers to floor. Lower the room onto rollers and test. Room slides out on rollers now. If I suspect the motor/gear box are starting to have a problem, I will do the upgrade. Our 2017 camper had hardly been used (4-5 times by 2 owners) when we found it on side of road during COVID. We have used it 11 times already in 1 1/2 years and plan to use it much more in the future. The rear of that bar I cut off already had just under 1/16" worn down even with little use. I also had to adjust the cables but now slides in/out much easier and less strain on motor/gearbox.
I had to pay a bit more for the rollers since when I was looking there was a shortage. But still @$25 was worth it.