Hopefully, someone with bunch of left-over mylar and a splicing block can help you out. Us Teres owners need to stick together. I've been using the Verus motor for years, so no belt making supplies in my stash, or I'd offer to help.
Teres 255 Turntable belts impossible to find!
Just bought a Teres 255 turntable and of course the mylar 41.5" belt breaks the moment after I got it tuned up. Have been trying to source some in in the classifieds for about a week without success. Please send your friends to the ad if they have any extras they can sell me.