The arrows will come off the bow tail right ( for a RH archer)- this fishtailing will rob your arrow of energy and will have a detrimental effect on accuracy.

Easton's website recommend either a 2013 or 1916 shaft. I've personally had 1916's fly well from 40# bows, but 1816s fly better .

2013's have durability problems- those 13 thou walls collapse like nothing. When I still shot FITA target I used to go through 2013's at twice the rate of 1916's. It's amazing what .003" of aluminium can do!