The posties took their time, but my package from GenuineDealz.com finally came.
In it were some of their 4AWG heavy duty lug terminals.
The wire I have fit nice and snug and I crimped them down with the Greenlee. It took a lot of force, I couldn't squeeze the handles together myself, I had to place one on the floor and press down hard on the other handle to get ti to crimp. I think the crimper is designed for lighter duty lugs.
Anyway, I was hoping the HD lugs wouldn't form a "pinch" at one of the crimp points, but it did:
I got the HD lugs because the thicker wall, but it makes it very hard to crimp.
They don't fall off, but they're no where near as elegant as the crimp in the first post in this thread.
The quest for the perfect lug continues.