Well this comes as a disapointment to me given the Corvette is GM's flagship car. I have close to 200,000 miles on my cobra now and the valvetrain is all original. The LS motor is such a sweet platform for GM. I am surprised they had such an issue and not have a TSB.
Complaining about it is not going to fix it. Better to get some valvesprings on it so I do not risk losing a motor.