Rocker arm recommendations?

AndyF said

You can get more lift with a shaft mounted rocker arm by changing the pushrod length. I used to use this trick on my dyno engines but it comes with a price. For extra salt in the wounds, the extra lift often doesn't generate any more power.

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If you can gain lift by putting a longer pushrod in the motor, then shouldn't this give you a clue that something isn't kosher with the rocker design? It should, because a properly designed rocker should lose lift if a longer, or shorter than optimum length, pushrod is used. Like I said earlier, a lot of funky nonsense can be done with a rocker, but the cam lobe is the "brain" information that tells the valve what to do. You aren't likely to make more power with more lift if the cam lobe information isn't being transmitted accurately.