FWIW: I bought these as stated, and I took my FJ to the dealership last Friday for an oil change, tire rotation, coolant flush, etc and they said I should have my blades/inserts changed. I then go to looking at my windshield and they are starting to streak. I bought these in February, and we did have quite a bit of snow and rain here since then. I guess these are something I'll have to replace every four or five months. Is that normal?