Has anyone else (besides me) had the material from the back of the convert. top at the back window separate? This happened once before, and was replaced under warrantee. The new cars have this defect fixed. Is there a hidden warrantee due to the poor design of the tops? Also, I am still waiting for an answer to my problem of my top not going down or up. I hear a click, the windows go down, and nothing happens. I do not have a partition, and the top is not attached in the front. Thanks