Hi All, Have a question and not sure if anyone else has come across this. I have 4 FBV spinners, 90/75, 90/1, 100/50, and 100/75. I have been mostly sharpening with the 90/75 until my 11 year old started losing his edge in high speed drills, so I talked to blackstone and they sent me a 90/1 as the next one up that would provide a little extra bite, the problem that came out is that the 90/1 has way to much edge and feels like you are on rails, but based on the chart it should have been the next progression. I then moved on to the 100/50 and it provided the best combination of edge and glide. Anyone else try any of the other spinners and had similar results with the 90/1? We skate on fairly hard ice and the list below is the blackstone word doc for comparisons. Thanks ROH FBV 5/16 = 100/1 3/8 = 100/75 7/16 =95/1 95/75 1/2=100/50 9/16 5/8 =90/1 85/1 3/4 = 90/75 85/50 95/50 85/75 1= 90/50 80/75 80/50