My wipers did same thing you described. I had winter blades on. Get past 65pmh and the wind would take them way left. I found Napa has a Valeo type wiper blade that has the 1500 pressure points on the window. They are just a thin curved metal blade that does not freeze up or catch the wind. Works great, best blades I've had yet. Now the thing mine do that drives me nuts is they wont park under the hood most of the time. They park way left opposite of where they should be. I have heard that I need to replace the wiper pulse module thats on the interior firewall at the center of the dash. I believe this pulse module is still sold at the dealer and it comes with the multifunction switch. I dont really want to take my whole dash apart to get at that right now. If there was another way.....