On the 09's the cap on the overflow doesn't seal properly. Not sure if that is 100% required in order to create the proper draw required (since the low pressure from the cooling system draws from the bottom of the container) but it made a mess. I used a little bit of RTV around the inside of the cap to create a better seal (let it dry on the cap before reinstalling).
I agree with you on the pins for the front calipers, they are a PITA. They should be like the rear caliper with the screw-in pin, one of the reasons that the CP5555 or similar caliper would have been better. I've never had the pin back out though, you can tell when it locks home since the sound and feel changes.
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