Did you turn cold check off? I noticed that mine flicker left, right, left, right for about 2 seconds when I start the car... If I have lights on auto, there's no problem. If light switch is off, then the flickering happens and occasionally I get the 'check parking lights' message on the dash.
Apart from the above - I love the look of the bright LED halo rings over the older amber ones.

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08/06 build 4.4i Stirling Grey over black