Thanks! I really (!) appreciate the document. I guess the prudent thing to do would be to check for a pushed-in pin first (since that doesn't require draining the tranny and dropping the pan off). I do know for a fact that the lockring for the connector is more than the specified 3.0mm from the case, though do have to wonder if the pins are so short that it makes a big difference (electrically). There's probably 3mm more gap there, so - unless I find that pushed-in pin, I'll be pulling the Mechatronics sleeve out and trying to re-seat it deeper (it sure seemed like it was in as far as it was going to go, but I might find something amiss).
I'm also going to explore removing something - anything - from the area to give me better access to the plug. It's SO tight that it took me longer to get the plug inserted than it did to swap out the pan and the tubes / seals.