I DONT BUT WHEN I RE FRET I USE SUPPER GLUE THE HOBBY TYPE SPECIFICALLY THIN S GLUE .making sure to clamp the fret down to then drop, a drop i mean a drop into the fret end.Try using a tooth pick bend 90degrees and soak it in glue for a few minutes get a glue drop to hold, and place the drop at the fret end like suggested holding for at least 1 minuet after which you may or may not need to level crown and polish the entire fret board
If the frets have a tang, you can use CA glue. On Parker Fly, they should be half round with no tang, factory glued with epoxy. I've done it once or twice, using epoxy.
Len,
I have had one of these in my repair shop for the same problem. Use the outline of where the fret was located as a guide and use superglue to re-install it. I have wondered what will happen when owners of these instruments need total refrets. I believe the fret material is stainless steel.