Hi all. Can anyone tell me what this bolt (same in opposite side) does? I have looked high and low for a manual for this slide. Called the company multiple times with no answer and no call back when messages were left. I need help. The reason I am asking is, I want to know if there is a way to adjust the slide. The rollers (previous owners) have damaged the linoleum and Iím wondering if these are adjustment bolts. But I donít want to start just turning bolts. See the second picture for the damage.