So, I got a new (to me) MZ-R909. Very nice condition and everything seems to function correctly with the exception of a slightly erratic jog dial. It kind of works, some of the time, but often will jump forward/backwards a bit instead of moving one step forward/back and when you push it in to "enter" it suddenly shoots forward or backward in the menus so you enter the wrong one. I can navigate things using the remote or the play/pause/stop/rew/ff button on the recorder (once I've managed to get into the menu using the jog dial) but it's a bit frustrating.
Anyone encountered anything similar and managed to fix it? Not sure if the recorder just hasn't been used in years and might "loosen up" with a bit of use. Or if there's any way of getting some contact cleaner into the jog dial somehow.