I couldn't get the locks to work well in the original model. No matter what material I used they would snap too easily on that narrow neck that extends from the handle. I decided to try to make locks that would attach to the stock Oculus wrist strap using flexible material. I went through several iterations before I hit on this design that has enough friction to hold onto the string tightly, orient the strap in the right position and still be thick enough not to tear when any pressure is placed on it. Plus you can still use the wrist rap as originally designed along with the knuckle strap. This also has the advantage that there is no Right/Left handedness and the same lock design can be used on either side. I like how it works. I hope it works for you!