Hi everybody I have a 2004 S type silver which I love and I have done 97,000 miles. Had a few problems with gearbox and centre dash panel whiich was replaced after it kept flashing. I think my headlights are not nearly as bright as they could be. I know I could take it to Halfords and they would fit either the full HID bulbs or the half whatever I bought. My man who does the servicing says they burn too hot and this could cause heat problems. Halfords claim they are suitable for plastic headlamps. What do others think? Also - can you buff up the plastic HL lenses from the outside because they have discoloured somewhat? Thanking you in advance.