The setup Each bolt has 3 nuts: one under the LC bed, one on top of the LC bed and one under the heat bed. The nut lock holds the bottom two nuts in place, leaving the nut under the heat bed to freely spin when you adjust the hex screw. 1. Print 4 of these. You may need to file it down to get it to fit. 2. Tighten the bottom two nuts and install the nut lock attachment. 3. When adjusting the bed, use a hex driver and turn to adjust. The nut under the heat bed should move as well. Sometimes it will not so adjust accordingly. **Strongly recommend the use of a CPU fan to cool the parts.**