The Aft Top Skin F-825 was place on top and a few holes were matched drilled, sadly, not drilled out before assembly. This resulted was a slight misalignment of the holes. Not a pretty sight. The rest were drilled out as per normal. Later a dimple hole in the Aft Top Skin was messed up...it produced an extra hole a perfectly form hole but an unnecessary hole. A new skin was ordered. Fortunately, the Finishing Kit was being packed by Vans at the time. Luckily only the cost of the part and not a shipping charge was incurred.