Programmed and sold 3 keypads, 1 remote, and replaced bad sensors. Worked on 5 doors total. Did tune up on each garage door. Recommended three struts on doors in front and replacing springs on 2 doors in back. Doors in back do not have access to inside of garage and do not have vault releases with jack shaft motors. Recommend getting springs done before they break to avoid issues in the future. All lift master motors. Three motors in front are belt drives.