I have a hayward pool filter and the brass sleeve nut has stripped out and threads are falling off it, and it won't tighten on the black metal strap that goes around the filter housing. When I contacted my local pool supply store for a new brass nut they told me Hayward no longer allows them to sell that part and they want me to buy a whole new strap for $225. The only thing that needs replaced is the long brass nut. Can anyone tell me where I can find that part? Could I just take the strap into a hardware store and buy a new nut for it? Or do I need to go to a specialty store like a plumbing store? Please help - I can't filter my pool water until I get this fixed. Thanks!!