Yes, they take some extra pressure even after you get them seated all the way (which takes a month, BTW).

Did you remember to sand the news pads and the disc? If not, they suck.

You need to break the glaze on the rotor, not a big deal. Staple some 100 grit sandpaper to a piece of 1x2 or 2x2 scrap, sand where the pads clamp in an X pattern. Both sides of the rotor, just go gently, when you see the rotor getting hazy instead of shiny, stop. Switch to the pad surfaces, lightly, and I mean lightly, sand them. Brake pads can get a surface "funk", for lack of a better term, while sitting around in the package. It's a normal byproduct, it's just excess adhesive residue outgassing. Break the shine, and they'll bite in a lot better. No need to even pull the pads, just pop the caliper off, insert the paper and scuff them up a hair. Or do just the rotor swept surfaces, the sanding on it will speed up bedding in the pads.