Would you please tell us which “cheap China case” did you buy?
Would you recommend it, given you had to do so much DIY to make it operational?
It's this one https://www.aliexpress.com/item/4000056606252.htmlWould you recommend it, given you had to do so much DIY to make it operational?
If you are comfortable adding a small piece of aluminum/copper in between the gap, then it's great. But if you like something that just works then stay away from it.
It's really odd those Chinese manufacturers don't check these kind of things before manufacturing by the thousands...