Well im putting oil into the diffs on my Hyper 7 PCR, last night i did the front one, and today when i came to the center, there are 6 bolts holding on the spurgear, and they were all preatty hard to break loose, but there's one i just cant budge,and ive already beaten it up from trying so many times, and i dont want to completely ruin it and not be able to get it out, so there's gotta be something I can do to get this thing out, and i need to know soon, thanks.