Confocal - focus motor gear slippage

I spoke with Steve Fryer, our scope rep recently about the problems some users have seen with the gears slipping when the focus motor is engaged. He stopped by and looked at it himself and said that the problem is that when you do manual focus, then engage the focus motor, it occasionally and randomly happens that the gears don't perfectly mesh right away. Then, when you start moving the focus, the gears slip into place, there's a clicking or popping sound, and from then on the gears are properly meshed. He said that the best way to handle it is to check the manual focus knob right after engaging the focus motor, and trying to move it a little should click it into place if it was not aligned. Then, it won't slip during the z-stack or when setting up the top and bottom. Let me know if you have any questions about this.