Hi

, can someone exsplain the chassis flex settings please , obiusly i know the less screws gives the chassis more flex for low grip , and more screws less flex etc ( i know im a bit dumb !!

) for high grip .
I normaly run my xb4 with just the 4x centre screws removed , but on sunday at the mid south reginals at torch ( my local and a cracking track !!

) i saw different cars/drivers , running different settings ..
Some had the outer front and rear screws removed , and some had the entire rear end screws removed ..
Soo at what point / track conditions would you change the flex settings ??