..........My 4/4 is of 2008 vintage but I am not sure the issue was resolved. The separate track rods leading from the steering rack onto the steering arm of the stub axles are canted upwards at an angle of just 1.25deg.
By some cosine trig I reckon that the levelling of the track rods (each horizontal on the rebound) leads to a tendency towards a greater toe out of just 0.2 mm.
On compression of the suspension however the angle of 1.25 increases and the tendency then is for toe in to be increased by about 1mm at the most (for the brief time the compression maintains).
I am unsure if this sheds much light on the issue of bump steer.
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Remember, on bump and rebound the axle end does not go up and down vertically, but slides on the king pin, which is inclined at 2 degrees. Therefore to minimise bump-steer, you would expect the track rod end to be tilted up at 2 deg, so that its arc of travel is tangential to the king pin at somewhere between static height and mid-travel. So I suspect that your 1.25 deg is not far off the optimal position.
