Interesting...I'll be watching your reports.
Changing tyres from Avon ZZ3 to Michelin Sport Pilot 4 Super has made a massive improvement, but I feel that MMC Value engineering has been applied to the springs and dampers.
Which generation Aero do you have? Tarka uses the Supersport Aero Tub, I understand with inboard springs/shocks.
S3, so the same suspension set up.