This was the REALLY tricky part: lifting the tape and sticking it to the t/g inner reinforcement bar, without wrinkling the plastic. But this location will cause any water dripping off the bottom of the raised glass to fall on the glass side of the plastic. Then it will run down the plastic past the access opening and out the bottom of the t/g thru its original drain holes, onto the ground where it belongs.
I'm sticking the tape to the "inner top reinforcement" in this photo:
That will keep it from interfering with any of the operating rods, or fouling into the regulator.