I broke a valve spring on my engine and when it broke, it spun around and chewed up the spring pocket that was machined into the head. I had been having trouble with metal in the oil ever since I put these -1s on the engine, and as a matter of fact, it blew up the first day out with the new heads on it...

Well, come to find out after I pulled it apart last night that the metal around the spring pockets is so thin in spots, the springs can break chunks of it off and get into the oil.

Look at this pic of the spring pocket that broke.

See where it had been breaking off prior to the spring breaking? And look at the spring right beside it. See where its been breaking off and getting into the oil? There is a piece about ready to go....

Just thought I would post this and save someone a years worth of headache and broken parts like I have had....