No bother at all!!
There aren't any screws on either side of A2,.. that's part of B2 which should have lifted out of place with the needle plate.... Are they not moving out of place with the needle plate?
Do you have a picture you can post? I feel like I'm missing something. The needle plate, including B2, should lift out of place, then you put turn A2 into place, and drop the needle plate (and B2) on top then tighten the 2 screws back down.