Just so I follow, tap the passenger side to meet the drivers, or vice versa.Yes, to get things to spec, you have to tighten the passenger side until there is no side play, tap the end of the axle, then tighten the ring again and repeat until you feel no end play on the driver side as well. Once it is all tight, then you back off the ring on the passenger side to spec.
I used a small hammer on the drivers side only, and never tapped it very hard