The only person that i know who claims to rebuild overdrive solenoids is
J Pinto of Philadelphia, who advertises in
Hemmings Motor News and online. See
http://www.jpintoweb.com/i have not found anyone closer to home who will work on an overdrive solenoid. As i recall, Mr Pinto's charge for rebuilding an overdrive solenoid was $295.00 several years ago. For most Borg-Warner overdrives, one can buy a new solenoid for less than that. Since the solenoid specific to the Saginaw transmission is "unobtainium," Mr Pinto's service appears to be the only choice that i know so far. He claims that he "can do it when others can't."
God's Peace to you.
d
Inliner #1450