Abu. Rather difficult to describe, and I have no pictures. I took music wire, put a loop in one end and a hook in the other. The hook went into the rear of the engine crankcase, and I put a screw through the loop into the engine mount. This picture was very early in its life, and I eventually had to enlarge the thrust washer hole, and put a rubber "washer" between the thrust washer and engine crankase, but it has lasted, and is still on the plane.

Les