Thanks for your replies
Whilst I have to bow to practicle experience, as a design engineer I see no reason why the suspension should stiffen but I'm greatly encouraged by yal's comments on ride as mine is exactly the same way at the moment, very unforgiving of anything bigger than a raised white line!

Sorry for hijacking your thread AlaskaVX but I can offer some guidance on how far you can crank the torsion bar.

Whilst I haven't yet taken mine to bits, from photo's I see that the torsion bars themselves are splined at the end that fits into the crank point.
To raise the VX the Torsion bar needs to rotate counter clockwise on the left side and clockwise on the right, this can be done by turning the nut or by pulling the bar out(needs disconnecting at suspension end) and inserting it at a diferent point in the mating splines in the crank point, This is how I intend to make the lift and only use the nut for fine adjustment. This then gives you the ability to go father than is available at the nut if desired.

One word of warning. It must be noted that by turning the torsion bars to achieve lift you are shortening the track of your front wheels due to the suspension points moving on a radius. This may effect handling at speed. I put may as I'm unsure to what degree, obviosly the more you crank the shorter the track.

Please feel free to shoot this idea down, as I say I bow to practical experience.

Col