When i bought my M5 i hated that i had some missing pixels. Well, week ago i ordered new ribbon cable and today we change it with Vantaam5.
Its PITA to change, but yes we did it. Took about 3hours. One cluster left to go, i think that we will make it in couple of hours ouich
Drilling the cluster was pretty intresting

Here is couple of pictures.
Cluster ripped apart
LCD panel and old "glue" from old ribbon. Taken it away a littlebit.
New ribbon cable attached to cluster.
And tadaa, pixels are back!