Hi Marc, I agree with you:
>>> Your vise and LAA appear to be fine...
They are fine as there are no manufacture defects. There is a design issue. Main vise grasps the blade (or LAA) with only a top part of the vise clamp, leaving the rest of the blade (or LAA) prone to wiggle.
>>> realize the tall LAA, when clamped is easy to wobble it.
The above wiggle is not a consequence of how tall is it. LAA is a solid alloy all the way. The base vise is super solid. It’s impossible to bend any of it. It is wiggly because main vise by design cannot clamp it solid. It clamps it with only a fraction of it’s top surface. The rest is essentially hanging in the air.