OK, I'm getting a bit closer on Tracking with my InMoov head. Had to do a bunch of clean up here and there but have the head back together and mounted on my new stand with the neck piston servo in the mix so I have X and Y axis movement.
I've slowed the Velocity down from the -1 max setting to see if that helps but it didn't make a big difference.
It is almost tracking objects but seems to wander a bit and then loses the object. I've been trying to figure out how to set the PID values.