>
>   I removed the H'C'U' from Its HeatSink & found the Mating Surfaces to be
> Quite Cruddy > Cleaned & Applied a
> new coat of HeatSink Compound

Remember that the only purpose of heat sink compound is to fill in the
microscopic spots that don't touch when the bare surfaces are pressed
together.   Using more than that amount will degrade the system, because
heat sink compound isn't actually a very good conductor of heat.

Yrs,
d