Hey guys,I wanted to just add a little clarity from the engines perspective. Ryan has described the correct way to calibrate the printer, and even a little pressure on the paper can result in printer being at a true zero. But to be clear, if you could calibrate the printer perfectly, zero is zero. Just exactly touching the bed with no pressure at all.Where is zero on a perfectly calibrated printer?The nozzle just exactly touching the bedNo pressure down, no gab between them.The print leveling actually subtracts out the paper width to try and get this exact calibration.