Pen repairs - any recommendations?

[Arctic pompey]

Wasnt sure where to post this, but have a nice Porsche design ballpoint which needs a repair, can anyone suggest a good un! thanks Howard

[8Ace]

In The Lounge, there is a thread called " Do you use a fountain pen". There's lots of knowledgable people on there, especially Robbo27. He or someone else may know of a repairer.