Aluminum Stron window locks and corners

The nylon window locks have gotten tired and are breaking. Some of the corner angles that have a tab to hold the lock in place and other corner angles at the upper part of frame that hold the window in track are worn and broken as well.
The track height is about 1/2" and depth about 1/4"
Any help or guidance will be appreciated.
I'm not adverse to modifying the window or the locks if something might work to keep them in place this winter.