If you don't feel comfortable with the epoxy, I would try to reach Roger Lewis. He is a Key Model Imports dealer in the Dallas area. He owns Wasatch Models.
His screen name for the forum is spiltwindow and his email address is listed in his profile. He also has a website. This is the new web address:
http://63splitwindow0.tripod.com/id4.html
I would think he could provide you with someone he felt comfortable.
BTW Looks like a beautiful engine!