I emptied the filter out yesterday. There is nothing wrong with the laterals or the standpipe. I've replaced the spider gasket. Checked the multiport valve, no cracks. I could see the tiny particles of Zeobrite that were through the laterals and bottom of standpipe.

I replaced my sand last year and had an awful year with dirt/debris at the bottom of the pool, just got frustrated and changed to the Zeobrite hoping that would help the problem. I also use DE.

I even put a ball control valve on the return and have that closed somewhat to relieve some of the power of my pump.

At this point I don't really know what else to do.