Front pinion bearing fit

So before I screw up my new bearing and gear set, I have a question regarding the front pinion bearing. I got out my old set of bearings that I ground down so I could slip fit to check pinion depth, and I had a hard time getting them to fit on my new pinion. I know the inner bearing is a press fit, but I thought the outer bearing was supposed to be more like a slip fit. I mic'd my brand new bearing and the pinion stem and the stem is around 1.311 inches while the bearing is only 1.308. Do I need to take some emery cloth to my pinion or something or is it supposed to be that tight of a fit?