I installed the Dzus fasterns on the engine cowls. I had purchased the Dzus C-Clamp grommet flaring tool some time ago and it worked very well. There is a total of 27 Dzus fasteners on the aircraft being 3 rear seat, 14 top cowl, 6 bottom cowl and 4 inspection hatches. I was a little worried how the cowls would fit after paint and Dzus fasteners installment. It took a little encouragement to secure the cowls, however they fit very well. There is one Dzus stud that will not lock, so I will have to adjust the spring next time the cowls are off.