I've used Bridgeport mills exclusively and have no other mill experience. So far so good, but was wondering about setting the quill/knee height to use end mills. Q: Should the quill be retracted with the spindle extended as little as possible or is it better to raise the knee as far as possible to minimize lowering the spindle or does it matter? I figure that extending the spindle/quill as little as possible is better to reduce vibration? I usually raise the table as much as I can for the work/cutter length/depth of cut. General milling question.