I can confirm that with my 2 Doepfer D3M keyboards which surely have FATAR inside.happyfreddy hat geschrieben: I´m using FATAR Keys since 2011 in my first HX2 organ.
From start they work little harder than other keys ............
but as longer as in use they become more and more smoother.
And there must be a difference between black and white keys as Ray Charles already knew
He said to his audience: "You only pay for the white keys, the black keys are for free!" :D
Gruß
Frank