With colder weather closing in I might have known better. My bike lives outside and for a couple of nights I neglected to put a cover over her. The other morning I noticed after about an hours ride that there was fluid in my tail light lens....on closer inspection I feel I could have transported a goldfish in it! I'm surprised the light still worked after I drained it. Reminded me of he time I found about half a pint in my Z400J's airbox. What to do and look out for...is drilling a drain hole in the lens a good idea and are there any vulnerable places elsewhere on a CB400F with this sort of thing?