I recently bought my RC51 but it was set up for racing. I ended up buying new plastics for it to set it back up for street use. THe bike did not come with any locking mechanisms to hold down the rear seat. I bought one but I am not sure where it mounts to and where it goes in the tail. IF anyone can give me some pictures from their bike on the inside and outside to help me solve this problem it would be great. Thanks.