i changed the brake pads in the rear of the mustang and now i cant get good solid pedal. how do i get a good pedal. i didnt open the lines so there is no way air got in there. also i was backing up and my leg had a muscle spasm and i managed to dump the clutch in reverse, it killed the instantly (the car did more jumping than anything and the maf was disconnected from the air inlet tube.) but now when in reverse it chatters a little. the tranny does everything else like it should just a little noisy in reverse should i be worried