Did the rear hub weights help?
To be honest, I did no drive without them after converting to R-setup,
so I can only guess it was a combination of the moved lower link and the weights. In the 2nd A-Final I tried a second damper set with -2mm length in rear, but my best lap was 15,731 compared to the first A with 15,648s.
Driving felt a bit twitchy, so I reduced the shock length in front to 57,5mm for the 3rd A. (best lap went down to 15,666 again).
Roll was clearly lower, but you had to keep an eye on offpower oversteer on the tight curves again. Driving was not so relaxing as with R-spec. Would have liked the idea to reduce droop only in front, but the day was over.
Driving in the final was also not that easy as in the heats, as I often took some turns wide to not harm the top drivers passing me. But I trust on the indication of the fastest lap.
Nevertheless the weights will stay in the car...