Hi Nick,
All this power play has missed my crib(cot in the UK)
but could you explain what you mean when you mention the " Sleeve bearing", are you referring to the sort of bearing that would be in the form of sintered brass or Phospher Bronze that is an interferance fit to the main body whilst the shaft spins in/ or though the bearing thus the need for constant lube, or is it the sort of split sleeved ball bearing type used in the feathering device of props,
many regards
PeterR-B Vfr