Just heard from the SA at the dealership, the technician didn't find any suspect indicators of a valve leak, etc. In their opinion, the condensation on the oil cap and dipstick were "ok." The engine oil didn't contain water or coolant particles. As far as the coolant being low, they did say that the recent flush may have been the reason it was so low. They'll top it off. I know for a fact that I filled the system completely after the flush, but I'm not going to call anyone a liar. So we'll see what happens. Thanks for the advice/thoughts.