I've got a Extra Setback Rowan blade in one of my HW units. The blade is made very nicely and is a nice investment. There is a fair bit of side to side in mine but the reason for it is the pivot hole in the Rowan is smaller than the holes in the unit so after shaving the pin down to go through, there is some slack. You could of course get around that by slightly enlarging the hole in the blade meaning no modification to the pin (which in hindsight maybe I should have done ).