Thanks for your reply.
Do you have any suggestions for getting the pivot bar out of the frame? After removing the 2 obvious screws, nothing seems willing to move.
I'm worried that this mfgr has glued the entire assembly together.
Rick.
Hmmm... if they don't just come out, you may have to take apart the sash. You have a very difficult sash to take apart, too. Besides the screws, there are clips built into the fittings that lock the frame together. You need to press in the clips to release the frames. If you've never done this before, you may want the help of someone who has.