Hey Dave,
There *is* a 'zone' where you're not under or oversteering badly. Your feelings match with those of many, pretty bad understeer, applying too much lock, then when you boot it you get violent oversteer.
A change of style is probably required, and it is imo a good (perhaps not quite fully realistic) aspect of the corvette, you have to be carefull with it, nursing it around the grip limit. If not, you're under or oversteering. But when you find this neutral zone, the car comes to life and you find yourself making small corrections for oversteer or scrubbing some speed off with understeer.. No longer the 'big' versions of these two states.
Don't know if you've seen my old ish Ring video:
http://www.youtube.com/watch?v=OY5ssFnBTCI
at 25 secs the righthander, the exit for example
at 1:50 the lefthander in 4th gear is still balancing
at 3:15, the twitch on downshift, and oversteer on exit
at 3:31, fairly balanced slightly oversteery exit (bumps did that)
Anyway, there are some more examples in that video. The main thing is that you have to avoid the understeer at all cost. IMO the driver is always to blame for understeer. When you do experience it, steering 'more' is something I still see from so many videos; yet it will just worsen the understeer.
When driven around its limit as the ring video somewhat ish-ly shows, there are plenty of twitches and slight 'worries' without too many extremes.
If this is all accurate, well probably not quite, but its not too bad and a very good excersize to adapt to the car
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