When the cabinet isn’t fully on correctly, or it’s shifted slightly from spinning, it can make clicks with the strokes of agitation, sometimes it’s also the back panel as well. Mine has done it plenty of times after a super big load where the cabinet has slightly shifted out of wack, even though it’s locked into place. Mine most especially makes sounds from the back panel on low agitation, not all the time, but sometimes. So adjust the cabinet see if it goes away, and check the back panel to see if it’s a little out of wack or something. When machines are this old, the cabinet and back panel tend to be noisy at times from the vibrations.