A problem here... When I start the car in the morning, and I go from Park to reverse I get a tick/ ting noise. Almost seems like it is metal hitting metal. This only happens in reverse and occasionally. Also when I'm switching from park to reverse, my foot is on the brake the whole time, I feel the transmission change and before I let go of the brakes I hear a tick/tingm so basically my foot is still on the brake when I get the noise. Any ideas what it is? Can it be anything to do with pads hitting the rotor?