2.5 8/11/09-I drilled a pilot hole in each of the aft ends of the C-657 canopy roller tracks, and enlarged the hole with a Unibit up to about 1/4" diameter for the fishmouth opening. I put the canopy roller WD-644 together with the brass bushings, screws, washers and nuts. The plans call for the screw to be an AN525-416R14, but that length is too short. The screw barely comes out of the nut, so I am going to replace it with a -146R16 length.
