I have the same refrigerator in my Montana. I've gone through the user manual (download from on-line), and here's some clues to look for:
• Do not block air holes.
- If the air holes are blocked, especially with a plastic bag, the refrigerator can be over cooled. If this cooling period lasts too long, the water filter may break and cause water leakage.
Press the Energy Saver button for better energy efficiency. If water drops appear on the doors, turn the Energy Saver function off.
There are 77 occurrences of the word "water" in the manual, these are the only two that say anything about any problems.
Inside mine, there is a little plugs on the back of the wall under the Twin Cooling emblem. When mine gets ice build up, that plug will pop out and I can see ice has formed in that hole. That's an indicator that your freezing unit has ice over too much. When that happens, I simply have to turn the refrigerator completely off (I unplug it since there is no true way to turn it off), and let it defrost completely.
It's possible you have simply iced up the drain and it's dripping inside. Is the drip coming from this hole. If so, you are simply iced up. It needs to be turned off for a few hours to thaw out and de-ice the condenser coils.
This is the simplest, least evasive starting point. If you defrost for several hours, and then it still leaks, then I'm out of clues at this point.
Good luck.
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