I thought I was done with Les Pauls a long time ago, but over the last few years I've played a couple of Historics and decided I wanted one. I found this: 1998 R8 originally shipped to Yamano. I spent time checking it out, but... I've noticed a little instability in the tuning. I blamed new strings, but I have about 10 hours of time on them. The previous owner used the same guage strings, so I'm not thinking it's the nut. I intonated it myself but I've been doing that for years (mostly Hamers) with no issues. Any ideas?