Maybe better chart modified from someone's original

 

will record some video of the app later.
atm i took off my valve cover to redo the seals as there was a small amount of oil entering the sparkplug wells.
will be monday before i can run the car again i think.....

what i did see when looking was that the STFT was going a bit erratic all over the place.
reading anything from -15 to 15
will make sure settings are right and that i am looking at the correct sensors.
car may potentially be running rich all the time.
but only rich enough to cause issues at cold start

for the AU model with only 2 sensors is it bank 1 sensor 1 and bank 2 sensor 1?
or do i just look at bank 1 and bank 2?
there are many different readings under fuel trims and wanna make sure i am reading the right ones.

 

The STFT does move all the time. It is Short Term, therefore, as long as it's moving around, its fine. The Long Term is more helpful in diagnosing issues, but not in your case....and also the 1995 LTFT seem to wander way out of parameter anyways. In any case, thats neither here nor there.

I think you might just have a dud ECU. When is say dud, there's something off about the fueling maps that the car is using when cold and in closed loop. (I realized I goofed in my earlier post, swapping open for closed and vice versa) Maybe someone sold you a 3.2L ECU?

 

You should only have bank 1 and bank 2 fuel trims , there is a long term and short term , you want short term

You should only have B1 S2 and B2 S2 for rear sensors in the pic below

With it running rich for such a long time may have to run hard on the HI way to clean up sensors of carbon to read better and better result otherwise chasing bad information

ECU Jaguar part # per Vee's suggestion as you mostly have 3.2 liters in Australia from my understanding

With a vac leak you would go from neg fuel trim toward 0 only related to higher RPM and not hot / cold