I just got my knoxx stock and have installed it, I cannot wait to use it...hopefully wednesday : ). The knoxx stock also comes with a new forend which looks great. My question is, I have a mossberg 500A persuader and was wondering if anyone has changed their forend on this particular gun. You have to remove a nut just before the forend but, it's a nut with like 3 or 4 slits in it. I just don't want to damage my shotgun by taking it off the wrong way. Thanks in advance....