Help removing
In your first photo showing two screws, the top one is an installation screw. This is an unusual placement, as the installation screws are normally placed at the top of the inside track, as you show in the second photo. The screw below this is the jamb adjuster. When you turn it in, it pushes the jamb tighter to the sashes and when you unscrew it it gives the sashes more play. I would start by first removing the installation screw. Then turn the adjusting screw in, so your pivot shoe and balance assembly can clear it. Hopefully this will allow you to raise the parts up to the cut-out. Thanks for posting, and good luck with your repair!
No matter which way you screw the adjuster it doesn't move nearly stripping the head.
I'm afraid I'm not sure what the issue may be. You may need to get in contact with a local handy person. I'm sorry we couldn't be of greater assistance.