I recently added an EZabl to my S5 and also installed solid bed mounts which worked fine until I noticed my prints starting to get worse the more I printed. I then noticed that my bed was loose so I tightened up the nuts and all was OK until about 5 prints later and they were loose again. I even used loctite on them. I do have a Keenovo heater on the bed so I wonder if that is causing the problem. Here's a pic of it showing how much the nut/wheel has backed off and it is all 4 of them doing this. Any ideas what's going on? Ooops, I guess I can't attach a pic. Anyway, it shows the the nut about 5mm away from the bed bracket and all 4 of them are doing it.