The floor of our superslide has sagged to the point where it might start dragging soon. These slides are made so cheaply it is ridiculous. I can see the slide box flexing and changing shape as I move it in or out. One day it will no doubt fall apart completely!
In the meantime, I made some shims to go underneath the floor lip when the slide is retracted. At least during travel it will not be flexing up and down any more. And hopefully that may also stop it from sagging to the point of ripping out the flooring.
But if yours is not sagging, I have heard of others whose slides were so poorly adjusted that they was dragging on the floor right from new, and tore their linoleum. Maybe an adjustment might fix yours?