Ryan, true, the mathematics can't be beat, and on such a short run the % elogation is quite high, but when in place in the plane where your lengths are over a metre, you'd barely notice it I think. Come to think of it who acutally tests the tension on their cables apart from giving them a "twang" every now and then?

I'm just cheap and can't stand paying a lot of money for a pulley I guess. [:@]