Just a reply to an old post here, we used All-Tex Foundation, Bill Marks, and he did a great job. We needed only two piers to stabilize the wall and afterward they started the job they realized it took four. He charged us $500.00 total for the four piers, which was a result of his original bid because $500.00 is his minimum (he says it pays for the big truck and 5 workers who come out - that's a big crew indeed). Doing business the old fashioned way instead of giving a low bid and then increasing it later after he has the job. Two thumbs up!!