I have a 2004 Roadster which had a very small vibration through the steering at 45-55mph so I took it in to get the wheels balanced. On the way home I noticed it was worse

so back I went they did it again and (after reading various threads on here) fitted a new steering damper - slightly worse again

Tonight I've jacked it up and turned the wheels around, looked for something loose but found nothing much apart from a bit of bearing play. Is there a correct way of adjusting the bearings rather than the nip up a bit method which I found here

I recently came from a VW/Audi/Skoda forum which would have had a torque setting for emptying the ash tray, so trial and error just doesn't feel right.