Window Crank and cover
Thanks for reaching out to us! There is a chance we may be able to supply you with what you need take make the accommodations for your shades, but I'll need a few more details about the operator to determine what your options might be.
To start, is your existing cover removeable? From what I can see in the photos, they do not appear to be. If they aren't, then you may need to consider replacing the entire operator.
In the event that you do need to replace it, I'll need to see a full view of the entire mechanism. I am especially looking to see how the base installs to the sill as well as the arm(s) and how the operator connects to the bottom of the window sash.
Please don't hesitate to reach out with any questions you might have.