Lifted my bed up today to see a mound of wood shavings???? Found that since this bed slides on the wooden frame across two plastic bumpers that again genius that put it together didn't countersink the screws all the way causing the heads to gauge the wood and eat it up every time you brought it in or out. So instead of ranting of what a POS this unit is here is how I fixed it. Buy yourself a sheet of 1/4" HDPE (think cutting board) and cut it into 1" strips. Then countersink some 1 1/4" screws to secure. You need 5 strips at different lengths and make sure you run them the entire length of the runners (see pics). Here is a link to the stuff
https://www.amazon.com/Polyethylene-...s%2C138&sr=8-2
**sorry for some reason it keeps turning the pictures sideways, just cock you head to the left