Took the valve cover off today and sure enough the intake and exhaust were tight. Smallest feeler I had was a .004 (I didn't realize I didn't have smaller feelers) and taht wouldn't fit in the intake. Exhaust was very tight with a .010.
I was planning on getting the seats recut and Kibblewhites installed anyway so I took the head off when I noticed some of these inscribings. I think The KRN markings matches up with the early X models (04-06 used the same head as the R models from what I hear). But I saw these markings on the side - AN65? UN65? Are these initials by someone who rebuilt the head before? Only other page I see something similar is Rick's- and he never mentioned it again from what I saw.
https://www.rickramsey.net/CRF250Xbigbore.htm
He saw these when he was installing the big bore kit. I doubt my bike has that, but is there a way to check?
As well, how do you think those cam journals look? Is that salvageable or should I expect the shop to say its trash?
