Twist loose the jam nut on top of the latch bracket.
Turn the glide under the base rail. Twist it clockwise to lower the base. Turn it counterclockwise to raise the base.
Tighten the bottom jam nut on top of the glide.
Tighten the top jam nut.
Adjust the other glides until the recliner is level and the path of the leg rest is unobstructed.