On Thu, 15 Mar 2012 19:20:12 -0000, Lieutenant Scott wrote:

The new radiator which came with brackets had no such plastic, and I
don't think any of the existing ones do either.

Can't say I've ever seen any plastci bits on the brackets or hoops on
the back of radiators either.

It only makes about 10-15 clonks about 1 a second.

Try giving it a woggle so where it bears on the brackets is changed.
Or if you can get at the bearing points with a long thin stick put a
tiny drop of engine oil on them.

--
Cheers
Dave.