Bev and Jerry -

It was a real long shot, so I'm not really surprised you didn't find a crazy CR. They are apparently very rare, and it doesn't appear that anyone really knows where they come from or what effects they may have.

You may have earned yourselves one of the gimme-hats favored by some aircraft mechanics I've known:

"If it ain't broke, I haven't worked on it yet."

It may be best just to leave it alone until it develops some new symptoms.

John