Ok I have a DE Filter that the grids are fine on but the old owners used replacement screws and such that they shouldn't have and the grid "holder" is rusted together. What's my best option? Everything works, but it's a pain to clean because I can't get the darn thing apart. Also I can't read the "info sticker" on the outside of the filter, so I don't really know anything about it but I can measure the parts.