I got the nut free using a rubberized clamp, because the doubled nut moved almost as easily as a single nut.
Now that the bolts and nuts are free to move I'm curious how the leg leveling is supposed to happen. There is a bolt without ends, a nut, the threaded foot, and a threaded sleeve that is screwed into the legs with a single screw.
The single screw in each leg portion was loose and allowed the threaded sleeve to move up and down a bit. Is this right or should the sleeve be tightly screwed into the leg portions?
Should the bolts be screwed all the way into the legs until they hit the wooden stop?
What is the proper way to level with this system?
And is it okay to use the levelers to add overall table height or is it ill advised and should shims be used instead?