ron, I´ve been working on my front end quite a bit, and read so much about steering boxes, and what I´ve learned is do not work on it when it works fine. eveybody was talking about leaks afetr rebuilding. I put SAE90 in my box after I adjusted it, and I have no leaks at all. so my opinion is: cleaning is fine, adjusting is great, and I´m keeping my fingers off the rest until it breaks