In the above pic below and to the right of the top right bolt is a round raised nub. You could drill a larger ~ 3/16" or so hole in that raised area and w a pin drill, drill a 1/64" (.015") hole in the drivers side mini cup plug behind it. The only hard part would be getting the old cup plug out to then press in the new drilled one as nomally you drive them out from the other end w a long rod. This would give you a pressurized squirt to take care of the chain/gears which would not at all compromise your oil pressure in the gallery