Please review the attached photos and offer some advisement on what may be used as a replacement
Dave Sr. from SWISCO responded:
April 17, 2017
Take a look at our 79-098 pivot set. Even though yours has three mounting holes at the top frame pivot, I think this set could still work. Check to see if the two holes on your pivot match up to the 7/16" hole spacing on the 79-098.