The right tool for the job
I've found precision hollow ground screwdirvers of the type gunsmiths use to be the best for the soft material of jets. They come in all lengths. There will be a slot driver ground to precicely the right shape. In the case of the oil jet, it is a #4.
DISCLAIMER: All observations made in this post are mine and based solely on my own anecdotal experiences, and may contain large doses of facetiousness. YMMV, of course. You are "on your own", and I take no responsibility if someone tries anything in this post and gets into trouble with the law, damages their person or property, or goes blind. Take everything you read or hear "anywhere" butt especially on the Web with a large dose of salt.
cpmodem screwed with this post 04-27-2008 at 02:56 PM
Reason: Add link