Originally Posted by G40
i've got fat fingers so theres no chance of me messing about with it
Fat fingers or not, just get one of the smaller sticks, pins or whatever the tools used when doing "chrochet" are called. They have a small hook at one end and with that it is very easy to pull out any o-ring. It's just to adjust the size of the tool to the size of the o-ring. When I was a scuba diver, I always had one in the tool kit.