You'll need to make a cardboard mock up of the windshield post w/o the " 7/16" pipe stem " and side that down along the frame to give you the exact post hole position. I then measure and install the base rubber to the windshield bottom, tap it on with a rubber mallet . Then the U channel rubber on the top of the glass using electrical tape every 6" to hold it in place the U channel rubber putts to the base rubber... Set the windshield top frame over than ..I use a rubber mallet to tap it securely in place and set that aside. I then run a 1/4 - 5 1/6 bead of caulk along the sliced area base aluminum strip and set the windshield assemble in place. Caulk 1/8 out from the hole in the fiberglass and attach the posts to the frame and lightly snug it down , then do the center rod snug that too but gently. Now go back and tighten the posts while you apply downward pressure with your hand on the top of the frame tighten until reasonably sung and re do the center post . Go back to the post again and apply light pressure to snug it up and the same for the center post. . Clean excess caulk with a damp paper towel . I then tape the aluminum base molding creating 1/8" gap at the base to fiberglass then run caulk in that with your finger giving it one last swipe with a slightly damp paper towel...promptly remove the tape . Lift the electrical tape away from the glass, stretch and cut it even it will disappear into the upper frame. after it sets up you may have to do a small amount of tough up caulk .