My cousin (who has one of my hatchlings) liked to have all exo-terra products in the cage so they would match... He bought the medium, and beacuse the hole will be indeed too small, he just sawed (very cleanly) the hole to make it a little bigger. He went from the inside of the hole to the nearest outer edge twice and punched out the peice (if that makes sense, ???) and it should work nicely.
Yeah I see what you mean. I thought that a medium would be fine but obviously not :| I will get one and either saw it out or drill it out going round with a drill bit in a circle. Thanks dude