Sensitivity of Synaptics pointing stick

Hi,

it looks like I have a Synaptics pointing stick on my Lifebook E8110,
connected as PS/2 pass-through device via a Synaptics touchpad. It
works, but it is horribly insensitive, making me crack my fingers
regularly. Is anyone aware of a way to tune the sensitivity of this
device (like one can do with Thinkpad trackpoints)?

I once had Windows on this box, but I don't recall anymore if it came
with some tuning software, thus I don't know if the hardware can be
tuned at all. If it can be tuned, are "just" the specs lacking? Did
anyone already try to obtain them from Synaptics?

Jan