Mike,
Is this the mast for the Tri?

Or is it going back into the Acat class? If its an Acat mast, the current trend is toward stiffer masts. The big top sails need stiffer masts. Most guys are adding uni on the outside, oriented top to bottom to stiffen up the mast. If you knew the age and make of the mast, you might be able to get an approximation of the stiffness.

Bill