There's no particular reason that a wheel built with 32 3x 14g spokes, a 470g aero rim and a 28c tire should be breaking heads-out spokes - except that the spoke tension is either uneven or low.

Straight gauge 14g spokes are not weak, but they are less forgiving of bad tension then butted spokes which are elastic enough to mask tension problems.

If I were the OP I would get the wheel stress relieved and re-tensioned. It almost certainly has never been trued by a human. And if that doesn't solve the problem, just buy a new Clyde wheel and be done with it, rather than replace spokes.