I'm not sure who else has had the issue of having the water leak under the back seats, but if you have I figured out how to fix it. There are drains for the convertible top under the plastics in the stowage area for the convertible top. You'll have to partially open the top (only until the back windshield is up and the stowage cover is lifted. then remove the plastic liners. The drains are located where the 2 screws are on the bottom piece (just in front of the screws). Once you clean that out (mine had glass clogging them), I used a shop vac to suck out the gunk from that whole area, you can test it by pouring a little water over the drain, it should drain out the bottom of the car. Hope this helps someone that has been as frustrated as I have been with no actual info on where these things are.