____________
In the graphic above, the two horizontal black lines are flexible plastic layers with the gel in between. I suspect the scissors permanently "dimpled" the top layer such that it is reading some sort of a "permanent" contact point.
You can gently "massage" the screen with your thumbs from the outer edge towards the dimple, to try redistributing the gel back between the layers in this area. I have my doubts this will work, though.
I haven't seen replacement digitizers for the X3s, only the X5s......and they are not the same digitizers.