The window was already thoroughly cleaned... Maybe its the type of rain we get here... OEM inserts on all my cars, have only lasted weeks before they start streaking and/or chattering. Like I said, as soon as I switched blades, the streaking/chattering is instantly gone. I've had great success with the PIAA blades. I can usually get multiple years from them.. On one car, I've gotten 5 years out of the blades. (I always clean the blades when I wash the car). I've never gotten more than a few weeks/months with OEM inserts. Most of the other brands, like Bosch etc, I can only get a single season from them.
If I were to venture a guess, I'm guessing your rain is much warmer than ours, so the OEM rubber will remain pliable better than where I am, which may explain why I have better luck with silicone blades.
I called around to a few of the top rated wheel repair shops and the price seems to consistently be $200-$250 per wheel. I ended up going with Sound Wheel Works in Bellevue. They are $250/wheel all-in (so including dismount, remount, rebalance), offer a lifetime warranty other than curb rash and rock chips, and can do a 26 hour turn around.