Gadge, what's wrong with WD-40?
It's just that it is not intended as a penetrating lubricant, and isn't at all a good one. It is good for dewatering exposed surfaces, and that's about it.
It performs poorly on both the penetration, and especially lubrication, counts. In fact if the petroleum distillate carrier is evaporated off, a brown sticky gum is the residue. Which clags things up, rather than freeing them!
By the way, can someone explain how to get this system to send me an email when someone replies to a post?
Click on the 'FAQ' button in the forum menu bar, then open the topic 'How do Watch Lists work?'. This explains how to set it up.