BTW Roger I can well understand the brickies reticence at doing this job. I'm a landscaper by trade (amongst other things
) and that used to be one of my most hated jobs, repairing retaining walls. You never know just what you will find until you pull it apart and that makes it very awkward to quote on. I've lost out a couple of times on those things which is why I never do them now unless it's to do as I've suggested above or I would quote to the hilt.