The trick to get it to not leak is "heavy drip check sealer". It comes in a small tube. Put a bead in the groove that lips over the body flange along the top and sides. Use a clothes line rope in the groove to pull the rubber over the flange. This is a two person job as one guy pulls the rope and the other holds pressure and slaps the glass down into place. Check and recheck to make sure the glass is centered from side to side. Once the seal is completely lipped over the flange and the glass is in place, put some more drip check sealer between the glass and seal along the top and sides.. Then push the flap into place that locks the seal. Clean off any excess sealer and install your chrome trim. Make sure all your clips are in place before you rope the glass in.