Ok not totally sure how this addon works. It was said at the beginning of the thread that you have to be in cat form and the values would change, but that doesn't seem to happen (either form gives you the same points).
The numbers will change, but it is usually several decimal points it, so you probably wont see it on the tooltips.
Then we have the values that are shown up: lets say I have an equipped chest and another in my bags. The equipped chest says 18.53 and the one in the bags says 17.21. So the one in the bags is 17 poinst better than the one I have equipped?
If you mouse over an item in your character pane the numbers are calculated by finding your current score, and then your score with the item removed.
If you mouse over an item the value is as if you replaced the item you are currently wearing with that item.
And then if I switch those two, the new item on the chest comes up with 17.05 points while the one that switched placed (and is now on the bags) is 4.77.
This sounds like there might be a set bonus that is not being taken into account, or maybe with the new chest you are not meeting your meta gem requirements. For the set bonus, I can certainly fix that, but for the meta gem, I am not sure when/if I can support that.
Can you tell me the two chest items in question, and possibly an armory link of your character?