I am a hardscape newbie but willing to learn and eager to add it to our list of services. I can figure out the pricing, just looking for some input and ideas of what to do with this situation. Customer wanted just the pavers leveled. I suggested at least a drain behind the wall and pavers fixed, if not the whole wall re-done. Would like to re-use the blocks and pavers. What kind of fill around the drain? Perforated black pipe with a sock the preferred choice? Any advice or direction is appreciated. Thanks!