i got my tfr from the same place. your problem was probably a result of how the freight people handled the package. i also had some oil on my moped and all over the box, but this was easily cleaned up.
i did have some problems getting the thing started though. the airbox and the carb need to be tightened, as they wiggled loose during shipping. after this fix, my tfr ran nicely.
i do agree with some of the dudes above though. tfrs are pretty cruddy. tomos is the ped to go for when you are buying new. it is worth the extra money. you'll end up spending just as much money, if not more, making your tfr worth riding. buying a si, bravo, or grande back wheel to variate the tfr; buying a new carb, a new airbox, a new crank, a new belt, a new kit, a new pipe, etc. yeah, go for the tomos. but if you have time, want to learn about you moped, don't mind spending the money, and don't mind wrenching your 'ped a bunch, maybe you can make cruddy, slow tfr respectable.