Thanks for the tip.
Yes, perhaps I am a tad too hot under the collar.
I would be very grateful if you could supply the make & model number of the heatsink/fan assembly you are using. I'm more than happy to give this a try, but would like to ensure that this purchase is done only once.
This will be the fourth heatsink/fan. I thought that there couldn't be anything better than a small fridge attached to the CPU after my last fan.

Much obliged. :-)