Fx impact buttpad

My fx impact but pad pulls out on the top even when the screw is super tight is that normal?
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"Omaralaa25"My fx impact but pad pulls out on the top even when the screw is super tight is that normal?
1523670150_20388213725ad15c8677ecc2.88481465_20180411_171920_Film3_2.jpg
yup same here. 
I took mine off to see why it was so sloppy in spots and other spots right. What I found was the slot inside where the thumb screw tightens. 
its tge slot that allows the pad to slide up and down. Mine was more then 1/4" different from top to bottom( the slot the the way the pad hangs from the back)