I've got a line on a 4-string, fretted Thunderchief. I've read most what's here about them, all great stuff. I'll be driving a ways to see it. It's said to be barely used, no fret wear, just a small ding ... etc, etc. I'm not sure when it was new, but it has the Baggs pickup and pre-amp. Is there anything peculiar to these basses that I should check out specifically? Thanks!