This is what the #56 drill hole looks like in the 4mm screw.

The hole can be drilled larger to bypass more oil if the pressure is higher than desirable.

My piston will probably not be back from getting the skirt coated for 3 weeks....I will have plenty of time to put the cylinder and head back on the engine, and work out how this bypass will work.  I wouldn't be surprised if I upgrade to 1/4" hose......the little stuff looks better - but I like the longer nipple and larger passages for the larger fittings and hose.