Just got a pair of CCM 652 Supertacks ice skates and am going to use the boot for my next inlines. I am using the frame from my old skates and even though they are both Tacks, the older skate's outsole heel is about an 1/8th of an inch thicker than my newer ones (a lot of the new skates have a much thinner sole). Doesn't seem like a whole lot but it will make the mounting more accurate and of course the transition for me won't be nearly as bad. Anyone ever put a washer or something between the heel and the frame to raise the pitch to more of a forward tilt? Gotta figure someone's had this issue before.