Searching for 27DS 50L

We should be able to help, though your balance is a little different than most. We will need to confirm a few things before we can continue.

First, can you tell me the exact weight of your sash? That will help us determine the proper spring strength. Furthermore, your first two pictures show the bottom attachment but I'm not sure what your top attachment is. I see a nylon part in your third picture. Is this what was installed at the other end of your balance?