Usually if it's too big he won't eat it. There have been a few people on here that have had their balls strike without a coil. That is a sign of stress and that he does not want it.

They won't force themsleves to eat something they can't. The strange part is watching one try and eat it sideways. Usually they will just let go and search for a better spot.

Don't worry so much dear. We won't steer you wrong. He'll be ok.