Good luck getting 1c of your money back then. sorry to be blunt, but i highly doubt you'll get anything back , from a pawn shop. they are out to make a buck, and thats where it stops. remember, the customer is always right when they are making a purchase, but is always wrong when making a complaint.
Ah well. I'm still pretty happy with it. Just took it for a ride and I don't think I want anymore power than what it's got haha!! Any 4 stroke oil will be fine in it right? So long as it's good quality