I've heard the same about the knurling. It does tend to draw the fender into the wheels for you but marks the stainless fenders....so the guy I spoke with at the Memory Lane swap said he used to tape over the lower wheel. Eventually he machined off the knurls. Now you have to use more force to get the fender in the tool but no marking, and if you have original paint it does not mar it if the dings are not too bad. . Of course if the fender is pretty rough you'll have to refinish anyway as the paint won't stay on the fender if it is bent up badly.
8ball,Where did you find it and how much?
8ball,Where did you find it and how much?