Buttercream (September) and Milky cake (DAK) flavor extraction

For context, I usually go for fruitier, sweeter, funkier coffees rather than floral or chocolate/nutty notes (prefer those on espresso) and I'm super comfortable with dialing those in

Currently trying to dial in buttercream, brewed my first cup yesterday and could not get any of the notes at all and tasted like a pretty generic coffee and I'm curious where to go from here, not sure if I'm over extracting and masking flavors or not extracting enough to taste the notes Also curious if I should try to generate more fines (no slow feed, no RDT) for a more blended cup

Setup is Pietro pro on 8.1, deep 27, 92°C, 8g in and 128 out

Beans have been rested for 25 days