V-Core 3.1 300 "shifting" mesh

I've been getting really inconsistent first layers and started with the beacon adjustments to see if that would fix it. Now here comes the strange part: I've done two meshes; scan1 and scan2. Both meshes were done right after eachother - and look similar. Only problem is that the second mesh is shifted upward .2 mm.

Anybody have an idea whats going on?