don't sweat it
If you're using an unbalanced count don't worry when a +2 is more meaningful. The point of unbalanced counts is to make life easy, +2 is +2 and it's not a true count.
To answer your question if you're using KO with an IRC of -2 in a single deck game, +2 would be the pivot. I don't remember KO's IRCs so you may have to adjust. At the pivot it doesn't matter how many cards have been dealt, you have the same edge with a +2 (pivot) after 7 cards as you do with 37 cards dealt. That's the beauty of the pivot in unbalanced counts, at the pivot you have enough information to be certain of your edge. The further away from the pivot you are the less precise you can be on your edge. However if you're above the pivot, you know your edge is greater than whatever it would be at the pivot.
So if your IRC is -2 with KO, halfway through a single deck you'd expect to be at 0... and you would always end up at +2 after 52 cards. If you're at 0 early in the deck it's better than being at 0 late in the deck because early you would expect to be around -1 and later you'd expect to be around +1. At the pivot of +2 you're 3 above where you expect to be 1/4 of the way through (early) and only 1 above what you expect 3/4 of the way through (late). However, at the pivot when you consider penetration and divide how far above expectation you are by remaining decks... 3 divided by 3/4 (early) and 1 divided by 1/4 (late)... both equal +4. Note that I did not divide the running count but rather the difference between the running count (+2) and the count we would expect at that level of penetration, (-1 and +1 for 1/4 and 3/4 penetration respectively).
I wouldn't spend one millisecond dividing anything during live casino play. It's enough to realize that when you're below the pivot, the same running count is not as "meaningful" the deeper the penetration. Hope this helps.