[rwhite65]

I forgot the valve locks. I sat my heads down (combustion side down) with a block of wood underneath them. I used the spring compressor to compress the springs, which allowed the valve to go down so it was touching the wood. Using a small screwdriver, and several swift wacks of the hammer....u should be able to break them all loose. After a couple hits to one side, hit on the other side of the retainer. Hope this might help ya.
Ryan