I’m replacing all my rubber hoses for Miflex. I got the actual SPG out of the boot but I can’t get the old hose out of the boot I asked my GF to hold the boot while I pull but she can’t hang on. And even if I can manage to pull the old hose out I done see how to get the new hose thru the boot opening. What am I doing wrong? I sincerely apologize for a serious post instead of making fun of split fin divers.