ShopTalk: ping drivers

[DADUGALLY]

Hi All,
Do you have any suggestions on how to score the inside of the hosel on a tisi?
I've got the ferrule done up well no problem, cut all kinds of different angled grooves in it with the dremel cutting wheel, plus have it good and scuffed up.
I can't seem to get any kind of score lines in the hosel for the epoxy to bite into though.
I've tried several dremel protocols and tried using a small drill bit and attacked the hosel wall with it as well a a bigger bit, but I can't seem to get a toe hold in it.
Thanks,
David