hello all, Palo Alto rebuilt my speedometer, tach, center cluster, and clock back in 2014,, the units have been working fine and they look great. But I have noticed over the past couple of months that after sitting overnight or for a few hours, the speedometer needle won't move unless I tap the speedo glass with my finger tip - upon which it quickly rises to the correct speed. Any idea what would cause the needle to bind like this? thanks,,,charles