hi, just got program... i love chassis dynamics this is excellent to have something specific to RC.
I have the some thoughts about chasis flex too. It is said in everything i read on chassis dynamic that ideally should be negligable flex, well why is RC any different now.
Likely it is just a quick way to fine tune overall stiffness, by removing some screws instead of swapping springs and re-aligning things. Also perhaps track surface and tyre roundness isnt quite as smooth for a 1/10th as for full size cars. Flex in chassis might help deal with that (thus increasing tyre contact) without having to go to very soft springs. Just my thoughts thanks.
-Jeff