Welp, it's bin just about a year now since replacing the power steering pump & rebuilding rack & pinion, and the PS has slowly bin getting louder and louder. Now it's back to roaring just as loud as the old one. Not drop of fluid has leaked since then. Pump was a rebuilt purchased from Ford.
I've tried bleeding air, but nothing seems to make any difference.
Make suggestions if you want to, but I'm convinced that excessive noise is one of the design requirements for Ford PS pumps.
Other than that one flaw and the AC compressor going out, and the alternator going bad, and the heater not working, and the transmission slipping, and getting 13 mpg, it's a fine machine.