I've got to say that the sporto worked flawlessly. I suspect I was quicker than I should have been due to the fact I could "cheat" some corners by leaving it in 3rd rather than dropping to 2nd and just concentrating on my line.
I forgot to mention that the little white 912/11 is another Pelican's (SteveF 911) It is a 2ltr swb that circulates 10 seconds quicker than me