Ed,
Believe it or not, those pieces of flotsam won't effect your image quality
very much, if at all. If I were you, I would just ignore them, unless they are
so huge that they actually show up. I built one ep that ended up with some
metal shavings that appeared after I assembled it. It didn't effect the image
quality at all.
Larry Brown
http://home.fuse.net/astronomy (to see the ep's I have made--none for
sale).

Edward wrote:

Hello gang,
I have an eyepiece with a bit of flotsam on an interior lens surface.
Looking at the underside with the barrel removed there are two round shallow
holes which I'm guessing are for a spanner wrench. Where do I find such a
wrench? Do they come in different sizes? Is the wrench that works on the
round holes suitable for use with the slotted collars too?

Thanks!
Ed