DH also has a minor overbite, and normal tonsils etc, but the thing is that everything looked normal before the x-rays, and nobody believed him about the sleep apnoea, until he demanded a referral to a sleep specalists and then when he saw that dr he demanded a sleep study (after which he went back with the xrays and the sleep study results, and they were like, oh golly, you do have really bad apnoea!)

So i'm saying everyone might tell you that it looks normal, but xrays to help, and trust your instinct, you know it isn't 'normal', so keep going until you find somebody who can help you.