Ok just trying to enlighten myself!

I've got the Epon AF202 3 Wood, I have no idea on the head weight but with a GD shaft(70g) and cut down to 42.5 " what would be the SW please??

Hi Dale, cutting 1/2" is about a 3 SW change. If ur doing it urself Try having fun with the swing weight estimator (google it) to have your starting SW. Otherwise just get it done properly so u have a peace of mind in this aspect of ur equipment.