"Jerry Baker" wrote in message news:HgTRg.2552$422.2051@trnddc03...
Pszemol wrote:
Screws underwater might look too "technical" and not pretty.
Glue is more concealed.

Scraping glue off of the inside of an overflow is not something I want
to be doing though.

Aesthetics are up to you, but silicone does not stick to the plastic
as well as it does to glass, so scraping two drops off does not
present too much of a challenge. If you like screws - go for it...
I have seen white nylon screws, but black ones are less common
so I did not even mentioned screw solution before for that reason.