This is a plastic model that my family gave me, saying they didn't have time to build it. It seems they only checked the number of runners and then stored it. The inner bags have not been opened, so if there are any issues, please contact the manufacturer. This is a personal item that has been stored by an amateur, so please do not purchase if you are concerned about minor details. As this is an unused item, we cannot accept any exchanges, returns, or refunds. Therefore, please do not purchase if you are unable to contact the manufacturer.