ok, so a detailer broke my shorty antenna off my car by accident. the stud from the mast broke in half. half is in the mast assembly on the room. the other half was in the antenna. i got the piece outta my antenna, now to fix the base. it doesnt seem to come out. we tried drilling and reversing it out and it will not move. so im guessing that mast replacement is needed. i have a donor base assembly in another car. has anyone replaced one yet? do i have to lower the headliner or is it possible to somehow remove the map light assembly and sneak in that way?