There are 3 blade types available for the 37" WB.
STD, high lift and Gator.
Part # 773499 is a 42 degree high lift blade, your stock blades are 30 degree.
You can look up blades here > http://www.lawnsite.com/showthread.php?t=88158
hustler blades are the Worst- The high lifts don't work well at all- better than the low lifts but still crap.
What I did was take my BRAND NEW BLADES - cut them with a saw after the raised foil- clamp them to flat stock, get out the torch and heat them up- I then took 2 adjustable wrenchs and bent up the foil to make a Super high lift. I then welded up the cut area. The machines cut so much better and also have much more vacumn- which is nice on thinner lawns so it can actually pickup and cut the grass.
I do wish hustler would make these available-super high lift- it would save so much time- and people would like the cut so much more. Joel