On my 1-18 I know it is generally discouraged to lubricate given the roller's and all... But I am wondering if it is advantageous to lubricate in any way the ball joint on the shaft end of the agitate arm? This area appears dry and has a little bit of a raspy sound to it. I considered applying a white lithium grease that I have that comes out as liquid and then dries to the grease consistency. I noticed some grease on the roller end of the agitate arm around the top part of the fitting. Seems to me that would lubricate without slinging around and getting in places it should not. What do you experts think? Thanks in advance for your knowledge.