This is a add-on locking mechanism for the spacer I created for the xtouch mount. it will keep the spacer in place and will not slide off.
When install it, make sure you push the spacer against the printer and slide it in, same removing it.
https://makerworld.com/en/models/49439#profileId-51313
https://makerworld.com/en/models/50836#profileId-52572