So I did what you said and measured the inside of the spindle. And got 0.0008" not sure if that's exeptable definitely better than my first measurement of the end mill.

I think the reason the first time it was so bad was the collet seat had a bunch of wood dust caked in it.

I cleaned it out and rechecked the end mill shank and I was right at 0.001". I already bought the Techniks collets on Gerry's advise, but I still have the factory collet nut.

So I don't know if I should be concerned about the left over run out or if it's close to what it should be. I never looked it up to see what it should be.

Thanks guys for the info and sorry for getting away from the post topic.

Dan