Originally Posted by
bware
If you are referring to a Z Lock manual plate, the center long threaded bolt used to adjust the height in theory really doesn’t need to be tightened down. It is only used to raise or lower the height. The side bolts and nuts are what holds everything in place. For example, on mine after adjusting height and all 6 side bolts and nuts are torqued down I will loosen the center adjustment bolt and then re-tighten just so it is snug and the bolt and washers won’t be rattling, not torqued like the rest of bolts but only tightened so it won’t move.