I use LMI's FW74 almost exclusively as well. I use their medium size crowning file (FFRM or FFPF) and it works very well. I bought the file about 20 years ago and it's just starting to show some wear and uneven cutting action so I should probably replace it soon. I may switch to the replaceable burr style they sell but I've got so much muscle memory built around using this one, I don't want to start over.