Illustrator Pen tool, smoothing a curve, without changing the shape
So I have this Shape made by Pen Tool which is completely mirrorable when I have the high peak at the top of the shape (I dont want the high peak, but a more smooth curve at the top)
So at picture 2 you can see that I have smoothed the high peak out (with smooth brush) it looks great! but now when I mirror my shape, it isn't COMPLETLY mirrorable. there are now some small tweaks here and there.
What to do?

