Perfect growth stocks don't really exist, and even the best secular growth stories usually see some "turbulence" at some point. So it is with Daifuku (DFKCY) (DAIUF) (6383.T), a global leader in material handling that is applying decades of integrated material handling automation experience into the rapidly-growing e-commerce/logistics/warehouse automation market. While Daifuku has an attractive multiyear growth runway as companies increasingly look to automate their warehouse and logistics operations, the company has encountered some near-term challenges in profitably penetrating the U.S. market, while cyclical challenges in autos and electronics create their