So i'm currently replacing my brakebooster, I've taken all the nuts off where the brakebooster is bolted down inside the car near the brake pedal. my question is how do i remove the pin that connects both brakebooster to brake pedal, it wont come out i've taken the clip out already but there seems to be a plastic end on the clevis pin which stops the pin from coming out. photo below for reference plastic end. cheers