273 rockers on e-heads

I noticed in the photo after posting it that it looks like the spring cup isn't in the center of the spot face - but I don't think that can move around.

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Looks to me like it’s either missing the cup altogether, or it’s a different(smaller) diameter cup.

How close are the tip heights to each other?

Just so you’re aware, the Comp rockers use ball/ball pushrods.