Smiley - NOW you tell me!
I'll keep an eye out on the Arrows and let you all know if they pull out. Just by the way though, I don't think the Olympic rivets were used on the bottom skin trim, as they look different and are much smaller than the rest of the skin rivets. The rivets I used are about twice the size as the old, so I'm fairly confident that they'll be fine (although they said the Titantic was unskinkable too!). Anyway, the Arrow rivet gun seemed easy to use, and the whole process was painless.