i use a 2inch cut head with 2 blades thatswing back.not because of tuning problems.
my first kill with these heads left a great blood trail and many blood trails followed,dont know about the 2 blade slice closing faster than a three blade hole just dont see it.chopping or jagged cuts are from serrated blades or dull blades mech. or fixed.
vortex heads work for my setup, pass throughs areno problems, if it aint broke i dont fluck with it.