[CAUT] harpsichord question

[rwest1 at unl.edu]

I have a harpsichord with wooden jacks and a missing tongue bristle/ 
spring.   The spring consists of a short piece of wire that comes up  
from the body of the jack and rests in a groove of the tongue.  I've  
made this repair before, but it was a long time ago and I don't have  
a harpsichord manual to give me direction.  How is the wire inserted  
in the hole(s) so that it will lock into place?  I know there's a  
trick to bending the wire and inserting it, but I can't for the life  
of me figure it out.  Thanks in advance for any help you can give me.

Richard West