I have a Sta-Rite Cristal-flo 24-inch 300lb filter. It is about 16 years old. The plastic/rubber supporting base split in halve and the filter has been dropping a little. I now have the sand out for replacing. An exact replacement stand is no-longer made and the ones that may be available are over $100. Are there generic stands that are available and can be used? Any advice on making a new one or perhaps using my two split halves? Thanks!