After months of saving, I finally ordered my dream wheel- and it seems to wobble! gah! It's a Lendrum Folding double treadle.
I have a Lendrum single treadle. I managed to bump off and lose one of the little plastic/rubber round things on the bottom of the wheel. This will make the wheel wobble, I just put a small newspaper type ad under the spot where the little round thing should be. I rarely think about looking for another one except when I am spinning. Before I lost the little round thing, my wheel didn't wobble. With the newspaper under the wheel it doesn't wobble.