Strange. I type with 10 fingers since 20 years or so (self-learned with some programs back then) and actually my only real problem comes from the number row since it just doesn't come to me intuitively, like it's simply wrong (and yes, i don't type numbers really often - that's also why I wouldn't agree with your reasoning that the 6 is responsible for a hard time adapting, since the 6 will simply not be typed very often for non-accountants. If you had said C/V/B, I'd agree). Only now that I've seen the Atreus62 I've come to believe that the number row (and C,V,B) are simply wrong on a standard keyboard. They simply don't work as they should be. At least for me personally.