I have been leaning into the rebuild direction, so a few questions to Ian, Bryan and the rest of the Forum members here. I doubt I could actually obtain the build sheet for this transformer, so hand unwinding the unit and counting the turns would have to be the way to go on this rebuild project. Opinions. Of course I would take some DC resistance readings before unwinding the HV filter choke, but no inductance meter here at the QTH. I am guessing with the same number of winding when using the same sized wire as the original unit, plus having the same DC measurement when finished, that should be in the ball park inductance wise. Is Nomex paper and their laminates the paper to be used here, or way to overkill? The Nomex laminate might be used anyway in some heavy coats to make sure the HV arcing problem of the Collins original unit never happens after the rebuild. TNX for all of the great info and the money saved can be used on powder coating the cabinet pieces. I am not worried about pinching pennies as this project isn't going to be a money maker to be sure.