Anyway I never intended to upset you so sorry if I did.

Another thing to consider is,-
If the head has got a little too corroded part of the casting may have come adrift inside the head itself and could be reaching a particular resonance
and making a rattling noise like the one you're hearing again in my experience not that uncommon.
This may mean having to strip it but usually it can be remeadied with a bit of
'chemical metal' and may mean not having scratch your head any more or
having to fit new cams etc.
All the best
Dr