Just about any bearing from the Chinese or (if you are lucky) Taiwanese (or if you are very very lucky, Japan or Italy) factory can be made smoother with a few minutes spent on adjustment. Since the hubs have a few months of use, I would recommend pulling them apart, cleaning, and regreasing. The cone wrench necessary to take apart a fron hub should cost about the same as paying a shop to do it, but take your time to figure out how to do it properly. Don't be a fraid to ask for help - either here, Parktool.com, sheldonbrown.com, your friendly tech at the LBS or a bike co-op, if you have one.

To be honest, probably none but the most dedicated experienced mechanics will take the time to make a hub perfectly smooth.
It may not be possible to make the hub perfectly smooth, but you can get it pretty godamn close.