I have found that even my Blademaster and Maximum Edge Tri-lie holders need to remove the top screw for small children skates and even some goalie skates. There just is not enough clearance between the bottom of the skate boot and the skate blade holder on some skates. Taking the top screw on and off is an inconvience but it is the only way to sharpen the smaller skates and skates with a small clearance between the boot and skate holder. I also have found that after a couple hundred skates sharpened on the X02 that making adjustments on the front two wheels is the easiest way to make adjustments. My experience has been that if I am off by 1/1000 of an inch, from being level that approximately 6 individual clicks of the adjustment wheel moves the skate blade 1/1000 th of an inch. In other words, if I clamp the skate and the gauge shows that the wheel is hitting the blade too high by 1/1000, then I adjust the front dials UP 6 clicks and I get very close. It has been trial and error, as I have previously used Blade Master and EZ-Sharp Machines. This FBV and Spinner system is by far the best I have ever used. I sharpen team skates for First and Second Year PeeWee's as well as High School kids and my kids coaches, and they all just love the FBV. Good Luck. Also, I have made a note of what each adjustment of the front adjustment dials does with my machine, and I am not saying all will be the same. I am only mentioning this so that you also may find that keeping track of how many clicks are need for adjustments will make it easier in the future. For example, the adjustment on the front dials is larger for goalie skates to get a square edge. Aproximately 20-25 clicks down on my machine to get the edge square. Your machine/holder combo may be different, but if you keep track of the number of clicks it will be second hand in no time.