The pressure waves are normal behavior, as it takes a bit of pressure to register the touch.
Nothing to worry about.
I think I may sell my Qu-Pac, however. Letting go of my Analog Keys means the Qu-Pac is a bit overkill for my OT MKII, Digitone, and Monologue.
I’ll sure miss the per channel fully parametric eq/compression, and scene save/load though.