As far as brewing goes, I’m not entirely in the know but I do have an idea. Anecdotally, I have found that you get different results with pour-over filtered, un-filtered (moka pot or french press), coldbrew, and espresso. I’m sure there’s something in there to do with heat, pressure, time, and how that impacts the extraction of different compounds. I’d change your brew method - you’re probably onto something there.