H Aaron,
It sounds as though the pot is bad in it, you might consider replacing the pot or replacing the servo itself as it is an old discontinued one and parts may not be readily available.
I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.
Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician
Also you may want to check our Website at (
http://www.futaba-rc.com)