Ground the jaws of a long nosed Vise-Grip pliers to squeeze the last rivets - didn't work (tto much flexing in the Vise-Grips). Ground down the jaws of a regular 6" Vise-Grips - worked OK. Pop riveted the R410 to the skin. Formed the leading edge of the rudder by bending it around a wooden rod. Drilled and pop riveted. The rudder is complete! Hung it on the vertical stab to see how it fit - It fit GREAT!!!