all, the layout does not sit directly on the ground! i have installed 1/2" t nuts and bolts to use as a type of leveling system... since i was a one man show, so to speak. when i was building the benchwork i had to figure out a way to level a table without help... you just screw in the legs to the table, turn the table over and level it via the "jacks" in each leg... thanks for the great questions! have had over 1200 hits on the site! launced it exactly one month ago today! thanks again ------------------ michael l.