Did mine a coupla days ago, (finally), dealers didn't know what they were, so I had to call Scott at Intense (Todd was out of town), got the dealer straightened out, got it done, and it killed about 4* of KR. I don't know if there was any performance difference, but less KR is always good!

Why did you need to do the case learn?
Did you install a new PCM?
Killing KR is always good no matter what the reason.

I hadn't done it since I put the PCM last year.....

case learns kill KR??? i need to do that with my new motor than!

can you describe how your KR was? only when warm, throughout the powerband?

Yes Most definitely could be your problem. You need to do a case learn whenever you change the crank position sensor or PCM. They need to match.