Didn’t miss any - the gun was really easy to ‘place’. It gets through nails at a phenomenal rate though - you seem to run out regularly (which isn’t a complaint about the gun, just something that took a bit of getting used to).
At the back it’s just a flat roof - the span was more than the local builders merchants keep in general stock and it ended up being not much more to do it in 9x3s than the spec’d 7x3s as 20 foot is an off-the-shelf shed building size. It’s not going to blow away that’s for sure!
