One thing that I would suggest is that a substitute transformer be found even if it doesn't fit on the board. We are a DIY group here and I'm sure that people will come up with a remote way to mount them. I don't think that I would have any issue doing that provided I had a part number of a transformer that would supply the needed voltages and current. Even if it doesn't fit in the suggsted case, I could come up with a different way to mount it.