I guess that's a personal preference question. The heel should be safely locked in because of the triangle it fits into, but it has "some" wiggle room". The left side of mine sticks out just a bit less than 1/8, but 1/4 is a lot cosmetically IMHO. You might be able to make it better by making sure that the back side is tight against the cutout, because sticking further out the front is no problem, but......