I'm newbie to all this Got two sl15 recently first machine cuts like butter second one I crashed into work piece when changing tool before cutting anything put program in cuts horrible our work piece sticks out 8 inches chatters and can't find sweet spot like other machine looks horrible noticed turret was moving by hand if pushed on it so tore turret off was looking for pins must of took out from previous owner couldn't find any put back together is a lot tighter no movement think nut came loose when crashed faced part left small nipple disnt do this before cut outside diameter looks little better then before but still not as smooth as other machine question is if i adjust again to where there is no nipple which is like 1/16 or less think that little bit would make it cut rough or do i need to realign spindle or turret slide and how much to have someone else do all this thanks for any help.