Hi gang. I thought I would share my groundbreaking tip with you all. I have a previously very dry and tired looking K140 that now looks almost as good as new.
Method - Give the cone a light wash with a damp sponge and allow to dry and then apply a light coating of Olive oil ( or Linseed ) taking care to wipe off any excess. Allow to dry completely perhaps a week and keep going till it looks right.
Look at the cone now I just need a new dome and we are good to go !!