Hey brokenhead,
Thanks for the idea of the 5/8"-18 oil drain plug and copper washer-it works great.
Now I just have to figure out why I am getting a coolant leak by the head gasket on number 3 piston. Just filled the radiator up and was turning the engine by hand to do the valve adjustment and a very small leak started. I rechecked my head bolt torque and it is correct.It's coming out on the side by the manifold. Just finished a valve job and reinstalling everything, too. Challenges...oh well.