Maybe it’s me but if they’ve supplied something “unfit for purpose” ie prone to diving and blowing through its travel and no difference between C T + D, the surely should be fixed fer nowt.
I sent Avid/SRAM whoever an email saying the same about my 2012 elixir 5 brakes….quoting magazine criticism and my LBS statements for bleeding (lots) and I got an apology and a brand new set of Avid 9s….worth a go