Ok I can't roll a joint for many reasons so I have to resort to those little obnoxious rolling 'machines'. I bought a 'king size' roller because it said that it could handle all the smaller paper sizes. It just can't roll any other size but full length, or at least I can't make it work? Is there something I'm missing or is it just sales hype and larger rollers can not roll small joints. I'd be grateful for help or point to videos that can illustrate how to roll a 79 mm joint in a 110 mm roller.