I find dumping pops out the clear lenses and strips/breaks the screw holes. I have reinforced the circumference with electrical tape to help prevent this and has held on well for years. I think 2 of my signals dont even have the screws anymore.
BTW never try to repair above with crazy glue...it will frost your lenses.
(since day 1)
13 CRF250L (3/2013)