Here's a opportunity to acquire a nice Road Show that's been lingering on RGP for a while. The Op is a old-time reliable RGP pinhead who knows his pinball, so if he's saying that this pin is 100% working, you can be sure there's no drift factor involved:
https://groups.google.com/forum/#!topic/rec.games.pinball/EYMldBdjMmc
I think he'd already have sold this close to his original asking price had he posted it on Pinside (and had taken some photos without flash):