Hello GadFly,
I too have a 2003 RT 190 (Dodge).
Did you take pictures of the holding tank you pulled out? Mine has a small leak that I'd like to get repaired. I'm just not sure where it's coming from.
Thanks in advance. Keep Roadtreking!
jrg

I think you nailed it!
First chamber above the Van floor; 2nd chamber below the floor.

Great
Thanks