Hiya - can't offer you any help as such - but wanted you to know you are not alone!!! I am in the same situation with my 11mo DS. He has been EWing for months & we have *finally* managed to get some improvements in that, but now he is refusing his PM nap!!!! As it happens he's actually been sleeping pretty well at night so I think we may be getting near to dropping to 1 nap.
Might be worth you posting your EASY too, just incase anything obvious jumps out.