Finally read the owner's manual. The hubs should be checked periodically and if loose, the clamp bolt is to be torqued to 100 foot pounds. No mention in the manual about wobble. Hubs should be tight on the axle.
Had a lot of play between axels & hubs on my 1980 B7100 when I first bought it. Search Piker & you can see photos & a description of the fix. Small bit of play due to some axel wear but still going strong.