Topband: substandard quality F double females

[Bob Eldridge]

>I did speak to Lee at Hi-Z yesterday and he warned me about 
>substandard
>quality F double females. He has had terrible problems with them.
  In what respect are they "sub-standard"?  What kind of problems? 
There is so little that could be defective if the center conductor of 
the coax is the right size to fit the double-female coupler.
Bob VE7BS