The present invention is related to a downhole tool having a flapper valve assembly for controlling the backflow of fluid into a tubing string. A drifting tool is provided adjacent an end of the winding tool and includes drifting blades extending radially outwardly for positioning within the slots of the stator. A dispersive system may disperse the reflected probe beam into constituent wavelengths to provide dispersed beams. The baffle separates one section of the air bore from another section, and impedes airflow through the air bore during at least some positions of the air valve. The light source also is operable to emit light.