Hello found that my rear window on my 85 300 SD would not go up because the plastic bushing broke by mistake I ordered a sliding jaw # 126-720-00-42 i do not know where this even goes and is not what I need which is a bushing # 126-720-01-42. I realize now that I have to grind the old pin out that this bushing attaches to and then have to pin the new one in which probably requires removal of regulator or just use a clevis pin or proper bolt and bushing instead am I on the proper track with this repair?