H3 ENGINE DESIGN FLAW?

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Design flaw my ass. This is the same engine used as an optional engine on the Colorado/Canyon and they can have the same problem; number one valve intake guide wears and causes misfire codes, and the cylinder head/valves/seals have to be replace.
New cylinder heads have hardened valve guides to prevent any type of wear.
Most happen between 10-15K, not over 15K like the guy said on the other forum.
Why this is happening is causing some people to lose sleep at GM. But widespread?
Let's see, a little over 200 cases in H3s a few hundred in C/C and the engine has been on the road since '04.
With well over 100K vehicles on the road with this engine, it doesn't appear to be that widespread.