Thanks guys for all the helpful hints.
For the moment I'm going to use only SMPTE and see how it goes.
I have years of experience striping SMPTE to lock Studer and PT together.
I do this on occasion when I run out of tracks on the tape machine.
The SSL is a newer addition here (had a 80-b) and would like to use the machine control from the center section which I've learned requires a A-800 transport cable to the S29 port underneath the desk.
The studio that had this desk had a 827 and the plug/cable is different than a A800.