I have an '06 36RLIK Alfa SeeYa Gold and several experiences with the 10 gal Atwood water heater. I will lend you some.
If you see drips underneath and the source is not from what you can see from opening the heater panel, then 99% likely it is coming from the rear. The aluminum tank DOES NOT leak (normally). You have to crawl underneath and remove a plastic cover (boxlike) to see the backside. For my model this is in the spare tire well.
The connections are input (lower) and output hot (higher). One of those will be leaking, if not the PEC plumbing leading up to it. Take a look and let me know what is happening.
In the meantime I can tell you high water pressure can have a deleterious affect. Be sure to use a pressure regulator. The unregulated (up to 140 degrees) heat of the Atwood can warm up the plastic nipples attached to the input and output to a point they will swell and eventually leak.