I have a facelift Signum 1.9 CDTi  Design
I have noticed that the steering tends to pull to the side under low revs, or when I go over the 'crest' of the white lines. It feels a little bit like torque steer but it obviously isnt as it occurs at every stage of the rev range. I find that I'm having a little wrestle with the wheel as im driving a long.
I've only had it 4 days and bought it from a Vauxhall main dealer - should I get it checked out or is this normal on the hydroelectric power steering?
Thanks for any input