I'm a relatively new turner to spindle turning. Most of my work has been bowls, hollow forms, boxes, etc. I recently acquired a Jet 1642 EVS lathe to compliment my trusty Jet 1220 midi lathe. The larger lathe has allowed me to begin to turn longer pieces for projects like table legs, stairrail spindles, and baseball bats. The problem I keep running into is that I get a lot of vibration in the center of pieces approx 36" long. I don't have much knowledge turning between centers in this length. What is the trick to keeping the stock spinning true and not vibrating around causing a mess of work for sandpaper? I usually run between 500-800 RPM and use good quality chisels properly sharpened. Any suggestions as to what I might be missing or setting up wrong? Thanks!