Thanks Sireland. I'm wondering if I wouldn't have been better off printing the back glass differently. Maybe I should have just painted the background black and then attached the various images on top. Then I wouldn't have concerns about having any seams show. I think that's the route I'll take when applying the images on the table top because it'll be a real pain to try to cut & fit around all the weird shapes.
The masochistic side of me still says the efi will be great once dialed in. Once (if) we get it working properly, my next concern is how reliable it will be. I doubt we'll ever become expert with this system but hopefully we'll be less stupid about it. I really value good communication and get discouraged when dealing with poorly written instructions or technicians that don't reveal complete answers to questions.