ok what you have to do, is take the leather boot off
then get a thin flat head screw driver under neither the handle from behind and pry it open a bit
then get a can of WD-40 with one of those long thin nossle things and get as much under the handle as you can
then twist and it will eventually work the lubricant under and it will slide off
also what i found helpful is getting a rag and some multigrips to get a good grip on it to twist
good luck