Good luck, but it is hard to believe that you have been able to "machine" off enough weight to do this. But if it is really so, it is likely that a prop shop can weld on material to replace any that is
lost, and do so for less
money than new blades. FOF themselves may offer a refurbishing
service... can't remember if I ever asked about that, but many prop mfgs do.
Do keep us informed as you
work through this... a very interesting issue for those of us with FOF props.
Jim