ive been using my xcarve for a while now, but for some reason whenever i start a new cut the first pass is much deeper than the next passes.
i have leveled the spoilboard, calibrated all 3 axis.
I use manual zero to set the top of the workpiece. a lot of times i use easel recommended cut settings. but setting will say something like .06in per pass, but 1st pass cuts .12in depth and i have to slow my ipm down until first pass finishes.
through cuts are spot on and barely touch spoilboard. wood is fairly consistant in thickness across the piece so it not any major difference in material.