Highly recommend the ss-nub. Just search it in the forum search bar.
It’s cheap and easy to make, and if you mess up, you can literally make a billion of them with the material. You also don’t have to wait/pay for shipping!
Also recommend the mr hop. My autobot was trash🤷🏽♂️ Prolly got a lemon, but I’ve used two mr hops and had no problems.