Almost every rocker is not centrally aligned with the valve it is meant to service.

Can this be remedied and should all the rockers be the same weight.

Hi Cooperess
Some of those rockers can be aligned buy spacing others will have to be machined to move them across but that's how they were from the factory they worked.
As for the weight don't worry about it as it will make no difference, but just for the record the distance from the centre of the rocker to the end of the valve tip is the only part that has any influence on valve bounce, from the centre of the rocker back to the adjuster has no influence on valve bounce
Graham Russell

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"It's better to be not informed than ill-informed"