Join Date: Apr 2006
Thanked 173 Times in 170 Posts
Rep Power: 12
Jon, even without leaking alu & s/s are notorious for not getting along. No leaks needed, just condensation or atmospheric humidity, and they often self destruct. "Proper" construction in marine or aviation shops will always, always, always, use separators and goo in between the two because they simply can't be trusted.
Check your boat tomorrow morning, you'll find the plates have all fallen off overnight just to spite you. Or, they're waiting for an even loess convenient moment. :-)