cleaning water drain tube

["Ted Stowe" <teds@accessone.com>]

question:

I was looking for the top of the water drain tube, where I lift off the top
vent in front of the windshield.
I had thought that I could see the top of the tube and clean it by pushing
something down throught it.

however is it in the middle ? (77), on the driver's side I have a few lumps
of some kind of body putty, (been there awhile and I don't want to remove it
just to see. but I don't see any drain, the stuff in the middle prevents
that.

is this observation normal ?

thanks, Ted.