Need Help w/Differential Repair

[ltdmstr]

So I tore down the back end of my truck to clean everything and install some lowering springs, shocks, 5-lug axles, new brakes, exhaust, etc. When I pulled the axles and swapped to the 5-lug variety, I found three loose bearings in the grease that drained out. They're about 3/8" long and 1/16" in diameter. So from what I can see in the exploded view in the factory manual, they appear to be from the back of the side gear(s). I'm not sure how that's possible, as the only thing I did when I swapped the axles was to drop the pinion shaft and remove the c-clips. But my question at this point is whether they can be installed without completely removing and/or disassembling the whole works. On, and btw, it's a posi unit. Any insight or advice would be appreciated.