[QUOTE.to them do I just have a CFII and a CFMEI? any help is appreciated![/QUOTE]
well, that's exactly what you got! You have a CFII and MEI. You can teach in a multi-engine airplane, students for private, commercial and instrument etc...You can't teach in a single-engine airplane, because you don't have an instructor rating for it (with your CFII, you can teach instruments in a sim, even if it represents a single-engine a/c).
Your situation is not different from someone who gets his MEI as his first instructor license, then the CFII and never adds the single-engine CFI.