If you want to skate your NIMH-Skates in a smaller shell without comprising the structural integrity of the shell, then we strongly recommend you to watch this edit. Jamie Murrett shows here how you can modify your NIMH-Skates in order to skate a smaller shell. In the end this modification will also allow your foot to move further back into the shell and sit more centered over the frame, improving balance and overall control while reducing heel lift.
Thank you for this great explanation.
Heel Cutting Nimh Skates from Jamie Murrett on Vimeo.