I've ruled out (for now) the steering pump. I did a hail mary and attached some paper toweling to a bent wire, dipped it in lacquer thinner, and ran it underneath the pump. It came back looking 'sooty' but no sign of fresh oil on it.

However, if anyone has replaced their steering pump, please point me to the thread, or just let me know where you sourced your pump and is it holding up okay without leaking? Prices seem to be from roughly $350 to $650. The latter being OEM.

Biba