Ok I'm new to the forum. This is actually my 1st post, but i figured it could help other members. We all know the the G35 coupes doors close on their own....I've even gotten used to it. But it does get annoying when you want to keep it open. Anyways i read somewhere online that 350z door checks will fix the problem. ....it didnt. But what did fix it is the door checks off a G35 sedan. I swapped mine out with some from an 05 sedan and my doors stay open with no problem now. I actually forget i have to give them a push now as oppose to just walking away. Hope this helps anyone who may want to do it.