Origin II S4 Cantilever TV Stand

I purchased this Origin II S4 Cantilever TV Stand In Black off the wall stand from The Plasma Centre. the site said it would fit my Sony TV, but it didn't because of the bulge at the back of the bravia model I have. After some DIY I made it work. However the shelves are rubbish and droop down because the fixing bolt hole are too big and can't hold the weight of the DVD or Sky box.