Yup, that's the part I was talking about.
If you don't need first gear, you'll be better off locking the dog gear to second gear. You can use the Gorillamaxx aluminum hub (in the pic below) or JB Welding it and/or screwing them together. That will remove the slop and make the gears last longer. The gmaxx way is cleaner and lighter if you can get just that one part. Mike may be able to get one - I think they're $12 IIRC.