If I was a bettin' man, I'd wager that yours broke when you lowered the top while the wind blocker was in the down position. If you still have the pieces, take them out of the frame and put them together and trace the pattern out and have one made from lexan (jpolycarbonate). The original ones are made of acrylic and they break when you do as described above. I've done this several times with my lexan copy and it hasn't broken yet!