Thanks russel that picture is better then mine (only just!). Yeah from pulling out the cluster with the allen keys it seperated the mask from the lens around the edges. Then when the lights are on you can see a rign of light around the outside. I can't seem to get them back together and I dont know which one needs replacing so I guess its best to replace them both.
Thanks again
Oh russ that part number is it for the high or low series cluster, just wondering cause the pic you attached is of the high series.