[BADDASSC6]

Ben I was already aware of the valve guide issue. It is "contained" as of 2011.

I seriously think some people either can't don't read the articles they post or are not capable of reading for comprehension. So you post multiple threads about a valve train issue. Every thread debates on whether there is an issue or not. You cla that the factory went cheap on valves and springs, but the threads reference a rocker arm fix. You claim the issues is with canned cars but the last thread had a pretty telling poll: 10 dropped valves on stock motor and tune, 5 on stock motor with tune, and 5 on crammed motors. Looks like we are less likely to see failure on crammed motors.
The reality is that any give my track day there is always a Z06. There will be failures. I felt fortunate to have my first motor last three years with the amount of abuse it takes.
Up had your hands on a bunch of Z06 heads right. Kinda like all that road experience you said you had.