ORIGINAL: Krysta
What it sounds like is that you have one of the newer 14MZ Airplane version transmitters that have the Futaba Heavy duty springs already installed on it. If you compared the two and they are identical, then yours already had the heavy springs. Older versions of the radio and a spring with the part number HSP78961.
The HSP79241 is the only heavy spring that Futaba recommends for the 14MZ and 12Z due to heavier springs causing damage to the stick assemblies.
Sincerely,
Krysta
Product Development & Support Specialist
Futaba Service Center USA
Krysta
I guess I could have one of the newer Radios and if that is the case they sure have soft springs. My 14mz is 16 mo. old and the 12z is just ove 9 months. When I first called it was the FUTM3640 springs you all recomended. After seening some posts I orderd the HSP79241 springs and upon receipt saw they were the same as originals I have
I called Hobby Services and they suggested I send they originals and the 79241 and they would check them with stock on hand. They should have them today??? I just like the feel the 9z has and would like to duplicate that.
May just take my chances and leave the Futaba 3640 springs in. Thank you for the reply JK