I have about 1 1/2 bottles of Tenax 7R left so I ordered a bottle of Ambroid and the applicator kit.
I have also sent an email to Evergreen Plastics asking them if they can recommend an adhesive - Ambroid, IPS Weld-On #3, #4, or #4807. Or maybe something completely different. I'll post rersults if/when I get them.