So my passenger seat has an issue, only one side move on it. I assume it is the little gear under the seat that is stripped. I did a search and found the website to buy the replacement gear with instructions, only issue is that my 2008 G37 coupe looks different. The 3 screw you need to remove are fine, but the cover will not come off because there is a bolt in front of it. When you twist nut the bolt just turns as well. How to you remove that?