Jerome,
I like using bamboo skewers, you can get a lot of them for a dollar. They are about 1/8" in diameter, if they are too big a little sandpaper will get it there pretty quick. I use gorilla glue for the inserts, it expands in any voids and strengthens the tips. as far as the feather coming off I would sand the cane/boo a bit to get the waxy like outer covering off and then glue the feathers, then add a thread wrap at both ends. I like super glue and a fletcher myself, but Duco and you eye will work too, just takes longer.
DBar