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It was garabge when it was designed, and still is.

I'm not a fan of them either but used em. I would take it apart and look at the condition of the cones. There may be debris or wear. You can grind down any imperfections and get a little more time out of it before it gets worse. If you don't already have one get a magnetic drain/fill plug, It will catch any metallic debris and help keep it out of the cones.