Problems with the Z-axis

[CollinsA]

I believe I'm having a similar issue on our machine. Each time I print with the part on the build plate (no supports) the parts are consistently 2mm short in Z. I have tried leveling according the the manual as well as leveling with the resin tray installed. I get the same results, I have tried as mentioned printing off the support plate with supports and have had more failures than successes.