The slate closest to you, bottom right in the picture - is not lying true to the slates above it. There is a ... 15mm gap? There are a few stray nails too.Why, whats wrong with the slates? Looks all flat and level/inline to me?
It has made boarding difficult as unless I cut into the slates, it leaves a gap. Painting it black has given me a bit of a get out of jail free card.