I fitted the rubber to windscreen first, then added a thin rope I guess 2.0mm to the thin slot in the frame side. I used 2 pieces. on for the bottom and one running from the bottom edge right round to the other. running soap on the rope an dslot
I then positioned the rubber and screen on the inside of the frame starting and bottom corners, first tucking the ends of the rope to the other side. I then forced the rubber into the frame (forced sounds bad but its quite easy). I started by placing both bottom edges in place and worked my way up and around .
I then pulled the top rope to move the rubber lip over the little extrusion on the inside of the frame, being careful around the attachment (pillar to frame) holes as they tend to cut the rope. then I did the bottom piece.
One thing I did notice you need to put some squeeze on the frame in the center on the long edge.
I used a little stiff wire diamond shape to feed the locking strip in, makes it a lot quicker