The fitting of a QT Diff guard

On the harmonic balancer, this is only my opinion and may be refuted by others.

This thing presumably is intended to balance vibrations in all the bits of metal and moving things on the front axle, as carefully bolted there by Land Rover 20 years ago, because someone may have noticed some vibrations on the way to the shops and complained. (They hadn't noticed it yet in 1989 as my RRC wasn't fitted with one). I would think that by bolting on a big heavy sheath such as the QT diff guard or similar, or changing wheels and tyre sizes would mean that such harmonics would be changed. Meaning, its pointless trying to balance objects and weights for which it wasn't intended, might as well remove it to be used it as a handy weight for something else. So, unless the axle is bog standard its worthless.

That being said, I also noted no difference when removing the balancer in favour of a QT diff guard, so much more effective for stopping rocks than a lump of metal hanging off one side.