Many component fountain pens have a long plastic sleeve attached to the center band that fits up inside the top cap. It's been my experience that this plastic sleeve is often "shaved" when the center band is pressed into place. These shavings will sometimes get caught between the center band and the top tube causing a very small gap between the two. So, my question is, do any of you cut off all or a portion of that sleeve or is there something else you do OR am I the only one?