Need a replacement balance. Maybe model 770. Overall length is 22" but stamped as 21F, see pictures. Can you advise of correct replacement part?
Thanks
Bernd

Ah, I see. I do not recommend trying to switch springs. There is a lot of tension on these springs and they are not meant to be replaced like that.
I was right -- you will need a 22F option. I'm going to email you a purchase link and price quote for your review. You can use this to place an order on our website. Let us know if you have any questions!