I have also followed your story, but I've been extremely busy and haven't posted much.
I don't really use the USB connection much. I used it to upgrade the OS and occasionally use it to play a midi file from the computer and have had no problems.
Come to think of it, I only used it maybe twice to play midi files, and that was months ago.
Anyway, good luck. You'll do fine with the 2k.
DonM