So even thought more is being done now than ever before in human history to curb CO2 output, the levels are rising faster now than they ever have? Kinda seems like all the “green” shit we’ve been paying more for doesn’t do anything.

PolyTerra Matte

This is a mechanical issue with your motion system, not your bed. If it were the bed the probably would not be consistent between different bed surfaces.

I would make sure the roller paths are clear and flat the entire length of the path. More than likely that is the cause. Also check that the cables are sufficiently long so they aren’t putting excess tension on the tool head or bed at the extents of travel.