Here’s some pictures of the bolt for the vertical over-rider. The bolt is a carriage bolt, 1/4″ course with the spacer shown. The bolt slips into the flat sided hole at the bottom of the over-rider, then the spacer goes on, then it contacts the lower valance at the boss and washer and the nut go on the back. Knew I had this somewhere and just found it. Uses a carriage bolt to keep it from turning since you can’t get to the head of the bolt. Should be able to find something that works at you local ACE.