Do you do any preventative maintenance to it on a regular basis? I set aside a few hours every couple months to make sure we have oil in the air system oiler, grease on the camroll and registration forks, grease throughout the servo system, grease the lift system mechanics, grease the roller wheels that the carousel rides on, and the linear printhead rails need greasing ever so often. On a less regular basis I'll loosen up the micros on each printhead, flush with compressed air, then compressed silicon to remove any thicker debris and repack with grease.