I am going to have to make a tool now. Thank you for the link!

I have taken apart 2 sets with good results. I think you have to. Grease gets old and drys out. I also have to admit, that I am the type of person that would worry about it, if I did not take it apart and inspect, clean and grease myself. I also purchased new bolts both times before I started. I also soaked them with penetrating oil for a couple days before I started.