mrckompressor

PLease help and bear with me, I am new to the forums. I ahve a 03 c230 kompressor sedan and I just purchased the 05 clear mirror blinker upgrade, how in the world do you get the old one out. Itook the mirror off the car and the actual mirror off the houseing also the internals, but ther is the metal spring loaded support that attaches to the car that is in the way some please help I'm sure it is a simple thing but it's very frustrating.