DE returning to pool, but I have done a ton of things.

I have a Hayward SP036 DE filter, the filters, small 0-ring, and manifold were changed, filters firmly seated into the manifold, the spider gasket changed in valve. Everything lubricated. DE still coming back into pool.

Do you or do you not lubricate the spider gasket?

Any other suggestion appreciated as I am at my wits end.

Thanks