No problem. I've done a few conversions using this video as a guide. I've started to cover the outsole of the skate with blue painters tape after the ice holder is off which makes it easier to mark up the center line, hole placement, etc. make it easy to see what you are doing and gives a much cleaner look after. I also suggest using pen or pencil to mark up as I've found a thicker marker to lack accuracy/precision. Thinner the line/marking the better.