Replaced subframe bolts today and knocking has gone (for now!), drives real nice now. When the new rims go on, I'll check the tracking and camber and with the near-future purchase of new coilovers, it should be driving much much nicer soon! Looking at KW Varient 1's or Spax RSX at the moment. AND yes it does mean raising car a little, but will be for the greater good!