A few years ago I bought a CH Flightstick Pro to go along with my DOS PC. I thought it worked fairly well when I bought it, but more recently I've noticed that it just won't hold steady electronically speaking even if the stick is stationary. I've taken it apart a few times, and it looks like there are three or four mechanical angle sensors feeding into a small logic board. My guess is that any problem with the stick is going to be with those angle sensors. Has anyone ever tried to repair/restore an old CH product like this or any other older joystick?