Bluebird
I agree with you about the problem of keeping a count in your head sucks.There is no way of changing this. I have spoken to the keyboard manager where I bought the Korg and he says this is the way Korg set up the fills.The "BIG" problem is the bass guitar note. It is "ACCENTED". This makes the fill sound out of sync when you hit fill button at the wrong time. I hope this makes sense to you.

Also I owned a Roland G600 arrannger. It waited until the next bar to put in a fill. It was smooth.

Hope I have not made this to confussing.
PIANOMAN