Thanks for your trust, but actually the solution is very easy - unfortunately not suitable for (DIY) retrofitting:
All we need is a slightly different rear axle; instead of the internal M 8 thread a simple M 12 male thread like below
(Which would be also an advantage for the fabricating of the axle!)
Guess that M 12 self securring nuts are available in lots of types everywhere.
So it’s done… 
We just need to convince Ming… 
Thanks for your interest!
I mean your tyre - screw issues are very unusual, no idea how that could happen.
Maybe we can find out more with pics, please let me know if you need assistance!
It’s really no problem to host/upload a few pics for you 
Image posting at Stridaforum.com in 5 steps