I have a 30yr old NAPA flaring set. It works great.
I have dicovered that a bad flare was made because
the proper depth was not set in order for the tool to
have enough or too much material to do the flare.
Also, too often there is a tendency to over tighten the
final flare. If you tighten to the point where it starts to
get hard and stop you will be surprised at what a good
flare you get. Don't try to tighten to the point where
you can't tighten it anymore. The flare will be too large
and it will look more like a single flare. There is a reason
they put a small T handle on that tool. If you have to use a
wrench then I would suspect you are tightening it
to much.
I have a small piece of 3/16ths line with a professional
flare on it. I use this as a gauge to compare to my flares.
Almost forgot...Use a good reaming tool before you flare.
I use one that came in my Makita drill set. I put it
in the drill and apply a small amount of pressure on the
line to clean it up.
Hersh
