The comment about needing to change other parts is likely correct but has nothing to do with toe. WD-40 does nothing for rust. WD is for "water dispersal". Kroil or any other penetrating fluid that deals with rust will help. Replace the tie rods if you can't get it loose.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.