I bought a multi wheel caramel cutter from Tomric and am having a heck of a time using it. Either the caramel sticks to it and then rolls up with the cutter or if I make a stiffer caramel it doesn't cut through it? AM I doing something wrong or is there a trick to it? I have watched a few youtube videos and it look so easy...

Caramel is 3/4 inch thick and a medium bite. Does the cutter need to be lubricated? Any suggestions would be appreciated.