Folks. I am currently building a Flexi rack, utilising stainless steel rod x3 (M20 with one end of each turned into a spike), 6 mdf shelves (20mm thick), 36 m20 nuts and 36 rubber (hand cut) and 36 steel washers. I am going to paint to match the living room and then re-site my kit. Is it worthwhile painting the underside of each shelf with damping paint or is that just overkill. Pics to follow. regards John