I've owned a handful of KORG products including a D16 and a Triton, and have to say that while I know KORG a HUGELY succesful company, the stuff ain't all that user friendly. The manuals always leave a lot to be desired. I know others also who have bought the above mentioned gear, and never used them (or used them anywhere near their potential) because the user manuals were so hard to wrap ones brain around. I'd think it was me, but I don't have these problems with other gear. No problem with a zoom recorder, cubase, other syths, drum machines, other midi controllers, etc.
I'll quit it now.
