Finally put up some pictures... the teardown is complete and the heads are off. They don't appear to be warped and it doesn't look like anything was leaking into/out-of the pistons themselves. I think there was just a leak between an exhaust path and a water path - which would explain the symptoms of white smoke in the exhaust but no milky oil.

Pics are HERE. I mostly took these in case I needed to go back and see how stuff went together and I didn't really pick through them to get just the most interesting ones... here are a few of interest tho: