Oil sample opinions

[Waterloo]

That sounds good, might just be some wear in the head, other cam? A good inspection might discover something. I would say as long as you are not building excess pressure in your cooling system and mysteriously losing coolant, sounds like normal wear to me. Still be good to pop the top though and have a look. Have you run the crank bearings, lower end, change those out? If not, might be a good time to do that.