The purge was easier than I expected. removed lower plugs, hand propped 20 blades and showed 20 psi (had to remember to turn master on for the electric gauge to work)
Ran the engine until oil temp reached 120, psi started at 60 and after warming steadied at 40. too easy to not do upon oil change or other removal of oil from system. will be SOP.
after running the engine and sitting in it I am anxious to get the wing done and both painted. Need to get started on the paper work.