Someone more experienced than I might give better advice, but... it sounds like your hubs might be a bit new to be repacked, although some people repack hubs as soon as they buy them. This might just be an issue of cone adjustment. Cone wrenches arent that expensive, find out what size you need and keep them around. Good to have. If you don't want to buy them, see if this guy can check the cone adjustment again. If you loosen them up gradually, and can't get the wheel to spin freely before it starts wobbling on the axle, then something is weird and you will probably have to take the bearings out, clean the bearing races and cones, inspect everything for flaws, and pack the BBs in with new grease.