It'll tramline like a bitch and very little can be done about it. One of the reasons being the caster angle setup is not intended to have all that rubber hanging out, levering the side of the spindle. When the road surface angle changes, the ability of the caster and tow combination to resist the tyre laying over and following the direction change is easily overcome.

You can have the toe increased, making the steering want to self-centre more, but the vehicle will be more difficult to change directions, the steering will get heavier in turns, and the tyres will scrub the inside edges heavily.

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Cheers,

Anthony