That is not math, that is common sense saying that something very weird happened somewhere. Now I for one don't believe that the aluminium alloy suddenly increased over 30% in density for your mast alone. We checked compliance in crossectional shape, so that isn't the cause either.
Come on Wouter,
There is over 15 % difference in mast wall thickness and you assume that the masts are otherwise identical? It's easy to slip 1 kg more alloy for example to reinforcements and sail track if you already slipped 15 % more to the wall <img src="http://www.catsailor.com/forums/images/graemlins/wink.gif" alt="" />.
Let's continue this when I have properly measured the mast when I have access to better scales in few months.
