So my glass bed chipped earlier this week and I decided to upgrade the bed by adding a sheet of PEI. I used this youtube vid as a guide: At the end of the vid he mentions that you should check the z-offset and possibly raise it a little bit. I know this can be done using MatterControl but I have since bought Simplify 3D and have been using that as the slicer. If I needed to adjust the z-offset, am I correct in thinking I need to do that to the profile in Simplify 3D? If so is that done in one of the menus or do I have to modify the gcode directly? Anyone know of any guides of videos that could walk me through this?