Issue PLA not right for Cable Chain #1

This cable chain was the first thing I printed when I bought my Ultimaker. I just noticed it had degraded and reprinted a new Bed End. The original was made from PLA and that's the reason I need to replace it. Specifically, heat from the metal plate the Bed End is screwed to, has, over time deformed the PLA and now I can't remove the screws that hold it in place without some delicate cutting. The Bed End must be printed with greater heat resistance than PLA can deliver. Trust me on this.