Bent Audio SUT

Hi guys, I have a pair of Bent Audio MU step up transformers. They need to be rewired to 1:20 Anyone here have instructions on how to do that? 

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Post #9 here suggests that the Bent Audio Mu actually uses Stevens & Billingham TX-103 transformers.

Post #26 here shows the wiring diagram for 1:20 turns ratio:
Yes, it does use S&B. Thanks for the link, now to find a friend who can explain it and understand how to rewire them for me. They are wired to a toggle that is on top.