ember-cli http-mock not returning to my app

So I added an http-mock for users that returns just a single user on the get route like so...

  usersRouter.get('/:id', function(req, res) {
    res.send({
      "users": {
        "id": 1,
        "pin": 1234,
        "first_name": "John",
        "last_name": "Doe",
        "email": "email@example.com",
        "phone": 8436376960
      }
    });
  });

In my model I have this

import DS from 'ember-data';

export default DS.Model.extend({
  pin: DS.attr('number'),
  first_name: DS.attr('string'),
  last_name: DS.attr('string'),
  email: DS.attr('string'),
  phone: DS.attr('number')
});

and in my action when I submit a form I have this to perform the get request

return this.store.find('user',id);

when I click on the submit button I see in the console a 404 error to the get url like so

GET http://localhost:4200/users/1 404 (Not Found)

do I need to do anything else to get this mock to work? I didn't see anything about needing an adapter or serializer to get the mock to work