Nick,
Contrary to Rob's post you'll find that 99% of the A-finalists at the Micro Nationals will be more than happy to detail their setup with you and will be more than happy for you to have a look over their cars for any hints and tips.
The reason that not all of them post here or on the UK-MicroRC forum is that not all of them are internet/online forum savvy
If you need any help please just drop me a PM or an email, and if you need any info relating to the Micro Nationals let me know.
We are all a really freindly bunch
Cris