Just want to throw this in before it is too late.
You mentioned Oring seals. Those are not much of a seal for a newly rebuilt head or your well worn head. It will pass just as much oil as before.
Your problem is worn guides. These umbrella seals will do a much better job of controlling oil.
http://www.ebay.com/itm/Viton-Umbrella-Valve-Stem-Seals-GM-Chevy-4-6-Cyl-Engines-11-32-Valves-/221346988752?hash=item33894f02d0:g:vgoAAMXQyFFTkizI&vxp=mtr
Another tip from Tom.
When trying to get the spring locks and retainers loose. Have a dead blow hammer or a block of wood to tap on the edge of the retainer to Knock it loose. They will come apart much easier.
Last edited by tlowe #1716; 11/07/15 11:24 AM.
