Good thing you asked because I thought the CT goes to ground and each leg goes to one side of the filament for the 6CA4. Maybe we can conference call Douglas; losing Damir was a blow, it was good to have two people to ask in case one was busy. My question is how did you wire up the AC primary of the seperate RS filament transformer? Did you take two seperate lines from the IEC? One for the power trans and one for the RS trans?