[sharpmark]

that's a picture of mine-when I'm driving the area along the peak of the bonnet about 1 foot back from the front is shimmering up and down constantly and it does move quite abit.
from the research I've done, its quite common and can only be fixed by putting in more braces under the skin ie one joining the two diagonal ones together and then some tight fitting packing between brace and skin.
I don't care enough about it too worry about fixing it-too busy driving it.

hello from rotorua by the way!