I switched my MM 7x16" over to the LMS 4-Jaw independent chuck as I'm doing work that requires multiple holds and I need to have the work concentric each step. I have an understanding of how to adjust the chuck -- my question is that the chuck causes severe vibration on the lathe --- whole workbench shakes even when the work is in a proper hold. I have tried remounting the chuck 3x in each position on the lathe. What else can I try? Thanks.