Right, the time has come. My A610 has now completed over 600 miles since I applied all that I had learned about why this model cuts out when hot. I am now confident that I have found and fixed the design problems that have led to this well known failing. I have done everything known to make mine fail including 3 long hot punctuated journeys today but it justs works and works. I am not giving advice on all the running components and adjustments that DG is much better qualified to advise on, only the deeper design errors that manifest themselves after a few years. If any other A610 owners want full information, just send me a message with your personal e-mail and I will reply to you. Once fixed there is no other car like it without spending a truck load more dosh.
Driving an A610 is just so sublime.