OK, after many failed attempts at organizing a race date/time Abukki V's Blackwiggle match final went ahead as we both found ourselves online at the same time.
I hosted first.
My selections were Phantom> Weapons on> PA/BR/hints off, in my now very rusty HD AG-S.
Chenghou rev - Blackwiggle by a lap+
Ubermall forward [it was supposed to be Sol2 but I selected the wrong track icon, shows how long since I played seriously ]- Blackwiggle by 21.2sec
Anulpha Reverse - I forgot that you really need BR's to take advantage of this tracks layout - Blackwiggle by 10.5 sec

Abukki's choice Phantom>Weapons/PA/BR on > hints off.
Sol2 forward -Blackwiggle by 17.5 sec
Metropia forward - despite a truly woeful BR attempt using a turbo going up the first bend which saw me fly off on the 3rd lap - blackwiggle by about 10 sec
Anulpha forward - Again I got cocky and went for a "Stunt BR" while heading up the overpass which saw me fall off it, still managed to get it back.- Blackwiggle by 20+ sec

7th decider not needed.

Thanks Abukki for the races.
I think not having PA on those first races shot your confidence, plus I had a good run of Turbos on most of those races which made it turn out like a defacto Green race.