Hi Frank,
Thanks for responding! I think that my comment mentioning "nearly a year" is not that far off the mark! It is now June and the original post was made in July and my follow-up at the end of May!😁. It is still driving erratically and overall driveability is poor with the original statement still valid. The only way to drive is using the sport mode with paddle shift so that it is not in 8th gear doing 30 m.p.h. @1000 rpm causing the engine to stutter as it is under too much load at low revs (I am a qualified Techy!).
I still think some kind of remap may be the answer, but I haven't had the chance to locate someone yet due to circumstances beyond my control (health issues and redundancy).