I'm a framing contractor, but I have agreed to help with a cinderblock garage project. The footing got poured at sunset on friday night, and come monday the cement is 3 inches out of level (40 ft X 30 ft) from one corner to the other. Its a 12 in X 24 in footing, with 10 inch block wall to be built on top. How should the footing be made level? Ready-mix three inches thick? Mega-thick mortar bed? If we pour more ready-mix in to level it out, does it have to be full width, or will 10-12 inches wide do it? Any help greatly appreciated.