So I went through a c&p exam a couple of days ago for Temporomandibular disorder. I can barely open my mouth cause of this condition. The C&p examiner never measured my ROM for my mouth. I am really stressed out thinking it will hugely affect my rating. I am also completely done with all my C&P exams. I am an active-duty Army. Do I ever get a chance to ask for another examiner if i am not satisfied? When do i get that chance? Is it what IMR rebuttal is for? I am really lost.