Thanks for the reply. For me if I did the CFI in a single retract then went on to do my MEI then I would be renting both planes. If I do my MEI first then I only have to rent the twin and can go back and do the single engine add ons in my plane which isn't a retract. I just wanted to make sure that one took care of the other. I would hate to do the MEI first only to find that I then had to go back in a retract single rather than a fixed gear.