Oh I know all about the oversteer!
Its lots of fun, but it can get a bit hairy under hard braking.
I suppose though that if you look at how light weight the standard chassis is, and how little hp the standard cars have to ours, along with all the under chassis mods, suspension, subframes etc it make sense that they must suffer from some bad chassis flex.
(it probobly explains why my bonnet is now sitting about 20mm higher at the catch than it used to).
But also remember that your not running standard weight springs, so any flex will be amplified, and so of course will any effect from a strut brace.
That said Im deffinitly going to be enqiuring about making one for my car.
(check your mail)