Hey fellas. I'm in the middle of swappin a 4-bolt rear into my 91' GSX, when I notice that the rear pinion seal needs to be replace on the thing first. I looked through my haynes manual, and it talks of how to do the replacement with the rear installed already(of course). I'm wondering how it could be done with the rear uninstalled like I have it right now. Is it even possible? The manual talks of checking the backlash on the rear, and adjusting it by removing/installing smaller/bigger shims. Thanks for any help guys.