I had another thread but I want to get more eyes... I'm trying to pull my axles to replace the bearings and oil seals. I pulled the diff cover and found the little bolt that holds the center pin in place. It's just a little rounded already, must be from the shop that did this job for me last time. 
So I'm trying to go easy here. Does anyone know what size head is on that little bolt? A 5/16 is the perfect size to totally round the thing out, just a little too big. but 9/32 won't fit. 8mm is too big and 7mm too small. I'm stumped. If I knew it was not too tight I could fall back on vice grips or something, but I don't. It could be tight. Any suggestions?
Also, is it okay to rotate the ring gear once the pin is out? I thought there was some mistake that could be done during this job that would screw things up, but I can't remember what it was.

So I'm trying to go easy here. Does anyone know what size head is on that little bolt? A 5/16 is the perfect size to totally round the thing out, just a little too big. but 9/32 won't fit. 8mm is too big and 7mm too small. I'm stumped. If I knew it was not too tight I could fall back on vice grips or something, but I don't. It could be tight. Any suggestions?
Also, is it okay to rotate the ring gear once the pin is out? I thought there was some mistake that could be done during this job that would screw things up, but I can't remember what it was.

