(THREAD RESURRECTION ALERT)
Wow... my heart goes out to ya....
Not sure if this helps anyone... but let me add to your situation. It might help others with "leaks";
I've got a couple leaks myself.
And, I own a Tiger River Bengal as well (M model).
I found my check-valve in the equipment compartment (up high and to the left) had been leaking.
... Not sure if it's just old (I hear they only have a 5-7yr lifespan), but at the cost of a new one ($14) I'm not complaining.
I also found my ozone hose crumbling apart, and had to remove it completely as the ozonater wasn't producing (dead). So I capped off that T intersection as well.
I even thought my heater was leaking, but I'm 99% sure it was the check-valve continuing to leak down onto other components. I'm buying a check valve today, and will find out if it helped my overall water problem on the equipment door side.
TO add to this, I do have a leak that drips down on the opposite side of the Spa. It's dripping behind the paneling, and onto the concrete. So, after reading your leaky story... I'm not so inclined to go digging around just yet. And I'm not sure if it's from the spa cover (and when I run the jets with the cover on), or if it's a leak from a crack, jet, or other issue that I can't see.
To add to all this;
I had a $85/hr guy come out and diagnose my leak (I was being lazy, and wasn't sure where to start).... he said, "oh... here..." and took out my ozone hose, ozonater... and left with my $85 in 15minutes. 3hrs later... it was still leaking. So I took on the troubleshooting myself. Once I called the spa store back to alert them to the repair guy and how he really didn't want to be at my house (he had other things on his mind for sure!)... they offered up a re-visit waiving the initial "house call" fee. It took me half a day of drying, watching, drying, watching... to figure out part of the issues.
This site is great, as I listen and read people sharing knowledge and experiences.