Hmm, well I appreciate the thought but it isn't working for me.  I reinstalled the Pioneer driver, moved the Escient to serial and put it on unused rs232 port 8, saved and downloaded to the XP-8, then put it back to TCP control, saved and downloaded to the XP-8.  I get no feedback from the Pioneer, but Driver Commands work perfectly.  Also, putting Zone 2 on does keep it from turning back on every 2 seconds.  Ah well, I'll stick with one-way control for now...