Clegg 22er question

[W2NNG]

I have a few Clegg 22ers and one of them is a little strange in that it has a Triad TY-79 toroidial type transformer installed. It is not an add on seems to be a prototype from Clegg.
 Some of the wiring is different from the standard schematic .It has problem I am trying to sort out.
I was wondering if anyone out there might a similar unit or a schematic that includes this model type.
Model # 22 ER
sn 622-071
                                                                          de W2NNG   John