Wow. While I'm not a fan of Shimano in any way, shape or form, I have to give them and especially Bantam a nod. They have consistently kept a presence on this forum for quite a while now and Bantam has shown remarkable patience at times. I know I would have let loose on some fool waaaaaaay earlier. ...

The best precision screwdrivers hands down ...

http://www.amazon.com/Wiha-26199-Slotte ... B000NZ5QG0

Fill the hole with a dab of silicone sealant - it can always be removed if that doesn't fix the problem. You have to eliminate all of the possibilities.