FTR, we got things working with the strings as noted above. Seems to work great - 115k baud BTW...because we really need to turn it on quickly!...HaHa
It still did take us 4 hours unrelated to the Seura...
Its a take-over job and we just needed to temp the control for the client before we completely revamp the system.
The path was simple - CP4 port to AVpro EX70 balun to the TV...but since it was mounted without an articulating mount and above a counter, with no slack on the cables, etc, etc..
And then we had inexplicable issues getting the comms to work properly with symptomatic red-herrings et.al....Ugghh! I need to charge more...:)
