Not sure what I'm going to do with this situation. I think it was installed improperly to start with as the line that allows water to flow into the holding tank comes directly out of the bottom of the boat...there is a shutoff valve...tracing the other lines is next to impossible. They go behind a bulkhead that from what I'm able to determine...is inaccessible.
I don't like the flexible tank either...however, there is very little room for a rigid tank...?
Thanks for the input....