Our new 38EL curb side (Entertainment side) sticks at top when extending out. All sides seem aligned. Checked the Slideout awning to see if this was possibly causing it. Doesn't do it if I retract and extend again. Once it passes about 8" it smoothly extends. No issues retracting.
My 36 ckts was a bit stickyin a spot also I went underneath when I got slides out and I lightly greased the slider gears and rails now nice and smoth on extend and retract
I have this problem with my kitchen slide since it is pretty heavy. Now I just bump the slide slightly. Found that it only sticks when it is really hot out. Not so much when cooker. After bumping slightly then it is fine for the remaining slide out.