After my latest maintenance on my R1 (with auto leveling), all of my larger prints stop raising in the Z after the first layer or so. I can successfully print any part that fits in a 1" square, but nothing larger. What I am using: Robo 3d R1 MatterControl PLA A raft (for adhesion) Fixes i have tried thus far: Different files/parts (downloaded/made my own) Different versions of MC Tried Cura Changed infill/supports Raft versus no raft Reflashing the firmware There are no issues with auto leveling, or manual jog on the Z-axis. I raise it 10 mm, it goes 10mm. The first layer always prints fine, with or without a raft. No changes to the parts or programs were made. Would this be a software or mechanical issue? Could this have happened from swapping out some bearings?