Save yourself some money. Take the original brackets and either use a band saw or a regular hacksaw and saw slots in the brackets. The top part will come off but you do not lose any stability when mounting the music stand. I did this to mine over two months ago and it still works fine. you may wish to purchase a product ( can't think of the name) that will keep the screws from backing out or in. Home Depot has it. It is a liquid and forms a bond after a minute or two. Sorry i can't remember the name. Bob
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Bob Lee