Glenn,
I just can't help but think any valve to piston contact would bend the valve before it would break a rocker arm. Once the valve stem was bent, it would not "self heal" and you would sure as heck know it.
I have been on another forum where they talk a lot about guides that are varnished up...old gas and long term storage. I have never put much faith in the "varnish stories" I have heard.
Stuart
