2004 Xterra 2.4L 2WD Speedometer Needle Sporadic

My speedometer needle is the only item on my instrument cluster acting amiss. The car is running fine, tach and temp all working normally, but speedometer needle randomly works, and can be willed into working with some random smacks to the dashboard above it. What am I dealing with here? The gear in the needle? The connector running to it? How do you fix JUST the speedo needle?

Any help is much appreciated!