I've got the wiper installed and was pretty pleased until I put the blades on. Before installing the blades everything seemed to be working fine. Low speed, high speed and the park function working fine. So I put on the blades, sprayed the windshield with water, called the wife to watch the first pass of the blades and to my surprise the blades travel only 90 degrees, instead of the 120 or 180 degrees that they should. Scratching my head on this one. I verified the wheel housing were gapped properly so they would not slip. Both blades are traveling together and park properly, so I don't believe they are slipping. It looks like the cable (rack) is not traveling far enough. Is there and adjustment for this? Can anyone tell me how far their cable travels?