Well constructed - ATI Outdoors T3 Collapsible Shotgun Stock w/Gen 2 Tactlite

This is a very well-made stock but I had issues with it. I have the Winchester SXP . With the pistol grip installation, when the bolt to the pistol grip is tightened all the way down, for some reason when I pulled the trigger the firing mechanism wouldn't actuate. I had to put a spacer using a piece of rubber mat that I cut out to fit the adapter to the pistol grip to fit in between the adapter and the shotgun. I don't know why it would need this or what would cause it to interfere with my firing mechanism but it worked. Other than that no issues I'm wondering if anyone else had this issue?