Today I did some more plexiglass fitting and trimming and drilled the Wd-725 canopy side rail for the plexiglass retaining screws. Then I taped down the canopy plexiglass securely and drilled and clecoed progressively from the top center to the sides. Next I marked the final trim line along the aft edge, removed the canopy in its entirety, frame and plexiglass, as a unit and carried out the trim. Then I marked and drilled the rollover bar and the upper aft skin for the aft window retaining screws. Finally I positioned the aft window and drilled and clecoed it into position.