Welcome to the forum!!! Just a little advice, quite a few owners have put black duct tape or 3M foam backing on the body where those stoppers rest when closed. I can’t see yours but I’ve seen quite a few XF owners that have indentions from not adjusting the stops. It needs a soft and sung landing, the worst I’ve seen was when someone’s tailgate gas struts went out and it slammed down and shattered the back window.