Thank you Kimi
'Twould be nice if 'twas instead related to something atop the engine. Some months ago I'd removed the AC belt as a function of replacing the blower belt, so perhaps something there is loosening up a bit. Will inspect. 'Preciate for the idea.
(Did I not see you, Räikkönen, dancing with Madonna at the Amber Lounge in Monaco back in '03? TheIceMan indeed...)