FROM WHAT I READ ONLINE THERE WAS SAGGING OVER THE SUMP COMPARTMENT ON THE 750XXL SO WHEN I GOT MINE IN SEPTEMBER OF THIS YEAR I REGISTERED IT I CONTACTED RED SEA ABOUT THIS AND WAS TOLD I WOULD BE GETTING A RETROKIT FOR IT WELL I GOT MINES YESTERDAY DOES ANYONE HAVE THIS SAME KIT AND IF SO DO YOU KNOW HOW DOES IT GO I DID NOT BUILD MY STAND IM LOOKING TO START MY BUILD AS SOON AS POSSIBLE CAN ANYONE HELP ME