Hey boneman91,

Don't know if you got your Head working yet, but you can if you don't find the airtronics servo, just go into any hobbie shop and you can find one that has comparable specs. just make sure the gear on the top has is the same size and has the same grooves. Best to bring the old motor in with you. Also, you will need to move some of the wires on the connector around. They started putting them in a different order. You can find that info online. Make sure to do that before installing the new motor. It is easy to pop the pins out of the connector with a fork or knive and then reposition the pins properly.

Also, it could be the servo board. Wouldn't hurt to re-solder the pins on the mini-board that the connector attaches to.

Yup, MSF is an awesome game. Has to be played with the sound Cranked up! What mood are you in this time? Edgar Winters? Dramatic Soundtrack? Oh ... best mod ever ... hook it up to and external subwoofer!

First go into diagnostics and do a switch test. Make sure all of your trough switches are behaving properly. They take a lot of vibration so diodes can come loose and other pieces can break.

If not the switches ...

You might have divots in your metal ball trough. Try leveling the machine funny with the left side much higher. See if this fixes the problem. If so, odds are you need to take the trough out and file the divots out so balls don't get lazy and stop before rolling all the way down.