Interesting thread. Incidently, the repair in question cannot be done that way. The rule is anything over 15 square inches for 15 minutes, is considered a "Major" repair, therefore requires discharging a machine. Raising pressure with nitrogen will work as well for doing minor repairs but is ILLEGAL. This due to the refrigerant that will be lost during purging. As for not preloading the bearings, nice try. They absolutely will fail if not preloaded. As for working Factory or Non-Factory, There are pluses and minuses just like everything else. The GPS thingy is coming whether we like it or not. Whats more important is whether the continued micromanaging will drive experienced industrial HVAC technicians out of this trade because of the disparity of pay versus what some other field would pay for the technical knowledge we possess.