Rajbang - yours are the old cast burrs and there's a definite flat spot on those. Gilbert's are the machines ones and they don't really have a flat spot so much harder to see.

Wow,
What a great job,
I really need this in my life,
How to reach one of this hoppers from out side USA,
Can you share the design to print it with my 3d printer ?
Really appreciate the time and effort you have spent on this design,

still interesting for the file anybody can reach out to op?

I pm others member that got the file and still go no reply

Any news on the 807 version? Would be great