Stop in for a cup of coffee

Any issues of late with the flare tools like this? With my cheapo and the new Cornwell tool it seems to leave some unflared tubing at the split line. I am blaming the not quite to size tubing that is available nowadays.

Quick cleanup with a file on the nut side of the flare seems to fix it but it is annoying.
And copper/nickel flares way easier.bending it is a breeze.