[johnny]

I would very much doubt many people would be good enough to find the limits of an ST4s on a track and certainly on the road. You say it needs more input, have you lowered the rear wheel? This makes a big difference.

But if you have not done that then it should not be flitty at the ton. Mine has been lowered and is rock solid at 100 +. What changes have you made to the suspension settings? Out of the box they are set soft.

Last guy to service my bike said "it handles well" and he is a club racer.

Set up correctly a S would run rings around a VFR