Hey Old, is the bowl assembly you have original equip? It doesn't sound like it is. From what I know, the filters were paper type like the P/N's we gave. Why not change the filer bowl asseblywith one that accepts the filers we gave you? I think it would be cheaper in the long run. Or you can do what many have done, remove the assembly all together and run a inline filter close to where the bowl would be. Again, cheaper in the long run.
