Hub Dilemma

[Richard]

My kid's friend used a drill to tighten the disc retaining bolts on an XT hub. The threads are in the condition you would expect. Should I:

1. Look for longer retaining bolts assuming that the threading goes deeper than the length of the OE? If so, what is the size and thread pitch I should buy? or;

2. Buy a tap and see if I can chase OE threads and use the OE bolts? or;

3. Buy a tap and use a larger diameter bolt? If so, what size for this operation? or;

4. Another idea?

Any help would be appreciated.