Last week, I found the same problem on a rear wheel arch
I'm having a bit of a problem getting the work sorted out by Mangoletsi - I didn't call them for a few weeks because I was just so busy at work, and I think they forgot about me. Rang them on Monday and they said they'd check what was happening (I also told them about the rear arch) and get back to me in 24 hours. They didn't, and again due to being incredibly busy, I didn't get in touch with them either.
Probably not worth trying until after Christmas now.

"Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so." - Douglas Adams
I
Nomes &
Gibbo