One of the things I am noticing is that the LaCarra has more "dish" to it then the standard Momo's.
I sold my LaCarra without checking that so now I am just guessing at that number?
Looks like the LaCarra is about a 1 to a 1-1/2" deep dish and the Momo's maybe just a slight one at maybe 1/2".
That definitely is going to give the clearance for your right leg and serving the same purpose as the D wheel.
For you D guys, I did try a Momo D wheel and it didn't give me the clearance that I was looking for.
I'm thinking of trying various offset wheels, i.e., 2", 3" and seeing if the combination works better?