Hello again to everyone. It’s been a long while since I’ve posted. I’m looking at the Mercury FTBP-59 as a new transformer for a new replica build. I was never aware of any original #8087 Triad PT with a separate winding for bias in any original 5F6A. If there’s amps out there, that’s just an interesting tidbit. In the past I’ve only used the Classictone 40-18029 with the 355vac HT winding. How does one go about wiring a separate winding for bias? Do I ground one end with the usual center taps and the other end to a silicon rectifier as usual? Kinda like the older Tweeds without a heater center tap. Thanks!