Wii U Pro Controller Replacement Stick Not working

Hey Community.

I have a little issue with my Wii U pro Controller. I replaced the Left Stick with a Replacement Stick from aliexpress. I cut the old out and cleaned up the solder points with the pump. The replacement Stick fits good and I soldered the new one on the little pcb.

When i connect it with my Wii U it only works from up to down and from down to up.

Nothing happens when i want to go from left to right and the movement from upper left to the bottom right dont work!

What is my Problem? Any solution? I think the solderwork is good.

Also tried recalibrate and resync. Not working for me.