Hi, I recently bought a 3 HP tank cooled M that has a starting collar fitted to both ends of the crank. Obviously, there is no pulley fitted. The engine is totally unmolested and had sat untouched for over 40 years so is completely original. The collars each have a direction arrow that when fitted both point forwards so they look like original fitments, that said, the arrows are of different styles. Any advice on this will be most appreciated. Dan.