From windows seals. I use to get to, before I fix them.
But can be frome many places. Get a strong flashlight and start searching. The best time is when is raining.
Remove the table leg fixture from the floor and look inside.
If they respect you, respect them. If they disrespect you, still respect them. Do not allow the action of others to decrease your good manner, because you represent yourself not others.
-2001 Maxum 2100 SR2 Sport -1997 Regal 258 Commodore (Sold)