TCM's link is better than anything I have ever seen Eric come up with. Actually, I've never seen him come up with anything. If these suggestions fit you steps, follow them. If they do not, repost here and I'll tell you something if TCM doesn't beat me to it. If you do not like the appearance of tiny cracks, you can use a mortar repair material that is available in a standard caulk tube.
And I think I'm gonna be a rock it man.
Jay