Having analyzed the results I'm pretty sure last place was in fact mine for the taking if only I'd gone back out a bit earlier after my first lap.
Next time I might even use a smaller bike and see if that helps.
After picking my bike up god knows how many times on the first timed section I was so tired I couldn't really ride properly. (I'm sure that's the reason )
Good luck to all those having a crack at the Cambrian. I wish I could be there too.