My question is how important is the quality of the back plate to the accuracy of the chuck? If I can buy the cheaper back plates and I may try to put these back in service if they will be fairly accurate. I am sure the issue with quality is the same as everything else, but can I get the cheaper back plates and do some fitting and end up with an accurate set up? If It will take a $400+ investment to get there, then I would probably just save the money and continue to hoist the heavier chucks around for now.
Thanks for your help.