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I believe it's gonna be a difference in cup and ball size. I bet if you look real close the ball is not fitting in the cup correctly, not enough contact area causing overheating because only a small area of contact. imo


And the only lube I would use at first start up is black moly lub.

Best to buy those 2 things(adjuster and cups) from someone like Smith Brothers so you know what you have, size and hardening. There are different ball and cup sizes.

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