need help

Hello,

The arm length is not generally a concern since the gears have some play to them. With that being said, that is quite a large difference, which leads me to believe that there may be other discrepancies. To look into this for you further, we would need to see clear photos of your operator fully removed from the window, including the installation hole pattern. From there, we'd be able to confirm if a better replacement option is available. Thank you!