Moregains,
Keep trying. I don't think your girth should be a problem, as I am just shy of 5". First, make sure you dont have any sizers on the device since you won't need it to be smaller. You just have to make sure that you have the ball fully squeezed, turn to unlock the chamber, put your head tightly to the opening, let go of the ball, and assist the head into the unit while the suction pulls. Once there, allow the glans to just sit there for a 2-3 seconds and then twist to close the chamber again prior to removing the ball from the device. You should not be able to pull and remove your glans. This thing can take lots of pull, but do not go beyond the recommendation or else you may get blisters since it is vacuum-based. For some reason if you cannot get the ball to work, they do have an adapter to help with suction via a suction line. I really do think that you should be able to get the ball to work. I don't know if this helps any, but thought I would give it a shot. Good luck. I still love this thing!