It was hard to get used to and adjust so over the years I have made changes to tune it in, now it is a better machine and easier to use. As with any machine it takes time and practice to get good results, but as with some machines it requires improvements too.
The radius on the curved piece of steel did not match the radius of the handle so I had to correct that by grinding it down.
The blade must be shimmed to get it parallel to the roller.
I use several thin steel shims and move them around while slowly tightening teach of the two screws. You must watch the gap between the blade and the roller; you will be surprised at how easily it is warped out of parallel with the slightest change in torque.
I also added a couple of oil holes for the roller pin.