I thought I would bump this back to the top. It has been 9 months, and I am still in search of the proper cables and small parts I need for the model 103 Truckstell overdrive. The knob in the second picture Tim posted is what I am looking for. And as I said previously even detailed photo's or drawings would help. I am also looking at spring loaded PTO cables to see if one could be made to work. I would appreciate it if someone could help with this little problem.