I just got fitted for an Evnroll by Guerrin Rife. I was using a Rife answer type blade before & am now in a mallet. Why? Because we discovered during the fitting I was aiming high & left, but then switched to the mallet & wow, right on line & making more putts! In the last 3 rounds, 25, 30, 31 putts. It rolls out very nicely.
I highly recommend getting a putter fitting!