I installed the EAA levelers (1/2 inch x 2 inch long carriage bolt and 1/2 inch nut) into the smaller leg doublers on the bottom of each table.
I first drilled a hole for the nut, then a hole for the carriage bolt in each of the leg doubler feet.
I used a rubber mallet and scrap 2x4 to pound the nut into the slightly small opening in the feet instead of using a chisel and epoxy as suggested in the EAA plans. I then screwed the carraige bolts into the feet and leveled the tables.