A Joint-cover rubber strip for preparing and painting two adjacent surfaces separated by a hollow joint, comprises a single-piece body 2 having a horizontal rectangular face 4 at one end which is parallel to another wider face 18. Each mold has common outside dimensions and a pair of open linear bearings that provide the mold axis and maintain alignment of the molds parallel to and in the same horizontal plane as the axis of the extrusion die. In order to make an efficient allocation, a new bidder is granted some of the resource based upon the availability of the limited resource due to the bids higher than the new bidder. A substantially trapezoidal recess is provided in the circular pad into which the seating holes are provided, and may be angled inwardly away from the side walls, with the handle provided in the recess.