message: fix height of non-moving pipette during move
diff: @@ -24,7 +24,7 @@ log = get_logger(__name__)
  DECK_OFFSET = {'x': -31.45, 'y':-20.1, 'z':0} # Avagadro
  -
  +MAX_INSTRUMENT_HEIGHT = 227.0000
  class InstrumentMosfet(object):
  """
  @@ -482,7 +482,7 @@ class Robot(object):
  other_instrument = {instrument} ^ set(self._instruments.values())
  if not len(other_instrument) == 0:
  - other_instrument.pop().mount_obj.home()
  + other_instrument.pop()._move(z=MAX_INSTRUMENT_HEIGHT)
  if strategy == 'arc':
  arc_coords = self._create_arc(target, instrument, placeable)
  