The present invention relates to a rosin acid ester and compositions containing the same, as well as methods of making and using the same. A method of determining a substrate miscut is also provided. The drive circuit module is mounted on a housing of the electric motor. The stabilizing portions are configured to be folded out in opposite directions forming a non-planar self-supporting structure. The second mode includes unlatching and pivoting the seat-cushion and unlatching and pivoting the seat-back such that the seat-back comes to rest substantially parallel to the track mount.