Before I start tearing apart the interior maybe you can help. I have water standing on passenger side rear floor board. cleaned sunroof drains suspecting rear hatch seal or sunroof seal.....any ideas?

 

It's your battery tray. Take the battery out, wire brush the rust off and use a rust inhibitor like POR 15 or similar product to seal it up. The water leaks into a channel in the front floor, goes past the front seat and pools up in the rear.

 

Found the water leak, water coming in at the rear hatch seal, started pouring in after I cleaned the sunroof drains. Apparently when cleaning the drains I blew the tube off the drain hole at the rear of the sunroof