I suggest going back to a bloom and the 4 multi pours circling from center out back to center, gee it takes about 1:40 minutes per Blur Bottle’s instructing.

What I got with a dump pour, at least in a wavy paper filter, was coffee grinds pushing to the sides, hidden in folds, water channeling down through the center, a weaker brew.

The slow circular pour was more smoother, balance, rich, and with the Blue Bottle dripper, sweet tasting.

The Kalita Wave 185 filters fits the Blue Bottle, or you can easily modify a cheap flat bottom filter to fit it, use a 1.5 mouth pill bottle or piece of PVC, doesn’t matter, push the bottom in to reshape it, with a wooden 1 inch dowel, to fit the round 4 cm dripper bottom, doesn’t need to be a neat job. Water added to the dripper, the filter will wet fit down fine into the dripper.

My only gripe is having to have a gooseneck kettle for circle pours,

Those stainless steel kettles from China, either they don’t clean the stainless steel well or they are overheating it when they weld them and and they rust.

Not cleaning it, heat too high removes some of the Chromium which causes the rusting out at the weld seams. Welding, which evey method, stainless steel right is tricky skilled stuff.