Ah right..looking at the crossover pic you posted i thought straight away the Solen inductors as a visual match replacement...
Cool - that's an idea. Most of the inductors are decent quality air-core types, but I'm aware that further improvements could be made. What about the Goertz ones you recommended before, or Mundorf air-core foil coils?

However, I love how the Lockwoods sound now, so perhaps it's a case of 'if it ain't broke, don't fix it'?

Marco.