Anyone have a spare cover for a Cateye rack mounted rear light?

[RhythMick]

I have a Cateye TL560...

http://www.chainreactioncycles.com/Mobile/MobileModels.aspx?ModelID=64505

Unfortunately the cover came off during a ride home, must have hit a biggish bump. Asking just in case someone has a non functional one that could supply a spare.

You never know...