I noticed one of the slide glides was broken on the front passenger slide-out. So we also got Coach Connection in Red Bay to fix that. The glide blocks help support the slide-out, but can break in time; this is the second time we’ve had to replace one (though a different one).
It involves slightly jacking up the slide to take the pressure off:
The the glide blocks can be easily removed and replaced, mounted onto a metal plate: