In the collective time it took for you to type your posts I am positive you could have found a way to ream out a few thousandths of an inch, even in carbide.
First, its obvious you know know little about working with carbide.
Second, I solved the problem for myself a few years ago, not going to go to the trouble of even trying to resolve it again. Is there such a word as resolve, if not I'm sure you all know my meaning.
Third, collective time? Being as I have been an accomplished typist since the age of 16, I seriously doubt I have anything over an hour taken up by replying to this thread over the last few days. More than likely more time spent reading all the posts such as yours trying to get me to do something that is very hard to accomplish.
But then it does get my post count up!