Got it back last night, dealer said it was the filter and replaced it at no charge. They said they test rode it and checked for leaks. However, it seems as though they just wiped the oil down with out using any sort of solvent. Everything still had a coating of oil, how are you supposed to identify a slow leak like that!! I cleaned the whole underside with brake clean later, now its bone dry and oil free. Hopefully no more oil leaks!
They said its very rare for this to happen and they haven't seen any others yet. The seem to sell a lot of bikes, so I'm guessing it is not a common problem.