[Ron Ramirez]

Never heard of a "Boeur"...do you mean "Heyboer"?

http://www.heyboertransformers.com/

They are in Grand Haven, Michigan. They are great! Not cheap, but they do great work.

Now, don't expect immediate service because you won't get it for a "one-off" job; they work us hobbyists in between large orders so you may have to wait 2-3 months.

I think someone I know, who had the same issues as you are facing, had a transformer wound for a 38-690? I'll contact him and get back with you when I hear from him. Hopefully he still has the specs.