Been back to the dealers today and one of the items for them to look at was the lights. Firstly the assistant on the desk told me, that Transporters always have bad headlights - I pointed out that H7's and LED's are not "bad" and that in my 25 years of VW ownership, the T6 H4's are the worst lights I have ever had and my T5 was much better and you would not expect VW to take a step backwards with a new model. After the Tech had had a look, they then told me that it could be because the glass on the light was dirty - I told them the van is cleaned weekly and it was certainly not down to dirty glass. They then told me that I have fitted aftermarket bulbs and that classes as a "Mod" and technically means I have invalidated the warranty - I told them that was a load of rubbish and that I had to change the original bulbs because they were like driving with nicotine stained net curtains hanging in front of the lights. The Tech then checked them and said there was nothing wrong with them. I asked them to adjust them to the maximum height they could to still comply with MOT regs. I will be on a late run tomorrow night so will see if it has made any difference. I very much doubt it has.