As per title, I’m finding the downshift a little slow on the smaller cogs ie 9/10/11/12 on my XX1 Eagle set-up.

– drivetrain/cables are very new and also run-in ie month of usee
– top jockey wheel to cassette distance set as per SRAM b-tension tool
– frame hanger is aligned

Any suggestions please?

I would guess either b-tension or cable is snagged/freyed somewhere along the way.

The cable is fine so I guess it has to be fine-tweaking of the B-tension screw…

This can be a slight issue on my Spark. I put it down to cable routing, and the pressure of the cable outer on the wire having a relative greater effect when the cable is slacker (i.e. bottom 3 cogs).

Has the hanger been aligned by eye or with a gauge?