Is this common problem?

I'm following up.
I can't prove it but I think the eye holes on ends have to be just right.
There must be some cam action inherent to the shape.
Before I put this car together I welded up an end because it was worn.
I used my best guess on the shape.
I tried ever thing.
Greased new boot.
Checked for binding.
Adjusted this way and that and it only seemed to work correctly with VERY little clearance between the clutch fingers and throw out bearing.
So I gave up and ordered a new rod.
When I got a new rod from Brewer's the problem disappeared.
I'm happy with the throw out clearance and it doesn't tend to hang.