CT 100 Plastic Yoke Cover Problem

[blacksmith]

Hi folks,
I could probably make the part in question if I had access to a good original. There wouldn't be any damage or changes to the original in the process of making a mold.

I would have to know the temperatures the plastic part might reach in use. Maybe someone with an infrared heat sensor could take a temp reading of the part on a set that has been working for a few hours.