I picked up few more bikes recently. A 2hp Maxi and a Swinger2. Does anyone know what the Swinger2's were rated at? Both engines are partially dissasembled, and I'm planning on rebuilding one to put on the Swinger2. Should I rebuild the 2hp motor for the Swinger2, or would the engine that is on the swinger2 be just as good? I'm also thinking about getting a kit for the Swinger. Would that make a difference? How can I tell if my crank seals are still good? What is acceptable play in the crank?