The shifter paddle sticks when being pulled

If the shifting paddle tends to stick while shifting, the most likely the reason is a loosened grub screw.  

In order to resolve the issue, please use a 1.5mm Allen key to tighten the screw so it no longer touches the frame of the shifter paddle module. To ensure that the issue does not reoccur, you can apply a screw lock solution to the thread of the grub screw.