as i,m in the middle of doing a rebuild on a livefibre[ the grips were shit] i thought i would replace them with cork[ the stuff my dad used as hand lines]. now i bored the hole in the middle on a lathe at work, but when i now shape the cork in my alps lathe i cant seem to keep it uniform[ seems out of round , if that makes any sense]. so is there a method to which i can work to??. thanks guys and girls ian