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I'm sorry. I was away for a few days and missed that part.

I agree with Jbulach. Unless you want an "as new" engine build I wouldn't hesitate to run those after a good cleaning. If the pits were deeper and the edges could cause possible hot spots then maybe but I'm not seeing that. That pitting is so minor that I don't see any reason to replace them.

Agreed, but some years back we added valve stem seals to an old tractor engine during a rebuild at the owners request. Less than 50 hours late the guides were shot and the tractor was smoking. Went back in and did the guides again but without stem seals this time. That tractor is still running...

Any chance that adding seals where none were intended to be could cause the stems to run "dry" and accelerate wear? Something to consider.

If this hasn't already been posted it's an old thread and a long read but lots of great information. https://www.steelsoldiers.com/threads/lds-vs-ldt-and-the-real-differences.56041/