[QUOTE=cobalt327;1636641]See how thin the valve margins are. If they're thin from wear, it's a good bet the seats are also worn.
If the guides are worn, that can wear the seat, eventually it'll be worn too much and will need recut after replacing the guides. Guides have to be done if they're loose before the seats are cut.[/QUOTe
What would be consider a thin margin and what is acceptable?
To wet leak test do you just fill the chamber with a liquid (gas maybe?) And if it holds fluid you are good to go?