Incremental size difference.

Hello. I included pictures of the old corner and the new corners I received today. The new corner is incrementally smaller and that causes the side rails to be short and not sit fully in the window tracks. I could replace all the side rails of course with slightly longer pieces but that defeats my trying to save that expense in both my time and cost. Please let me know as soon as possible as to options you may have that will be a closer replacement for my original corners. Both of these corners are the proper depth, 3/8" . It's just the length of the actual corner that shortens up the total length assembled by about 3/8" and that allows the screen to fall out on its own. Thank you again and look forward to your reply.