I know you know this...
OK one potential change-up with the track pack is to keep the shock setting static and adjust the sway bar links. In theory if you stiffen up the back sway bar relative to the front it should reduce the understeer. That also means softening up the front relative to the back should work also.
Alternatively changing out the front springs to softer front springs should in theory help with understeer.
As already mentioned negative camber in the front will also reduce the understeer, so remove those shims!
I say all of the above in theory because I have not actually taken such actions in my Lotus except for removing the shims and having maximum negative camber up front. Truth be told, I'm too chicken.
I do know that in my Miata that if I make the back shocks stiffer relative to the front the car is more likely to oversteer. It actually is pretty fun to drift a Miata around a corner by setting the front on softest setting and the backs on super stiff.
Presumably if I do the opposite (soften the back relative to the front) it will give me more understeer.
Of course it goes without saying that the Miata is a bludgeon of a car in comparison to the razor sharp saber of the Exige. To actively induce throttle lift oversteer in the Miata much more dramatic action is needed. I could never drive my Exige with the same gusto that I drive the Miata.
Of course some of that hesitency might be because I can total the Miata, walk away and replace it for less cost than one bad off in my Exige. There is a reason so many racing people talk about Miatas as if they are semi-disposable, because they are!
I think Prof. Chili was right, the Miata is going to ruin me as a Lotus driver because it is so forgiving and major mistakes are do not induce major wallet trauma. That's racing... :shrug: