What with everything else that has been replaced and the repeated mentions of the "old" injectors, I am actually a little surprised that the injectors haven't been taken off, sent away to somewhere like Injectortune and given an ultrasonic refurb plus calibration check / jet pattern analysis. Did this with our AUA and it contributed to it running better than it ever had before, and a lot cheaper than buying new injectors of unknown Aliexpress/Amazon provenance. I actually managed to remove and refit the injector / fuel rail combo myself without setting myself or the car on fire!
Being a Molecular Biologist isn't incompatible with basic car mechanics (after nearly 30 years tinkering with DNA I should know!)...
Yes that is what we are going to do know get a refurbished set of injectors in there. Should have probably done this on day one because I purchased the car broken with an injector fault and I just purchased a single injector and got that fitted with a much cheaper mechanic thinking I will sell this car but then my wife fell in love with the A2. It's a beautiful car. Then I got all this trouble.
DNA for 30 years do we know each other? I've worked for people like Agilent