Sorry guys, wrong answersYes, slate can warp to the point that it's high in the center or low. Just ask Diamond, as they have quit a few slates that are high centered from the start, so they don't use them on the ProAm's or Smart tables, instead they stack them up piled high outside the factory with 2x4's placed around the outside edges, in a way as to not support the center of the slate. Over time exposed to the rain, sun, heat, and cold, they slowly start to change in the center of the slates, sagging back down to level, or even low centered...which is an easy adjustment to correct on the frame of the tables...but it takes quite a bit of time for the change to take place
Glen
this is correct, Glen is 10000% spot on.