751-39 TGX red tip

Hello,

Your tilt pivot is a similar style to the 26-150 shown below. These are commonly used with the S751 channel balance but I can't determine the correct replacements with the knife lock shoe still inside the window jamb. If you could remove the shoe to show us, as well as write out the dimensions, we can go from there. Please also show us how the top of the balance channel is installed. Thank you!