There are a few questions I have. My 700a is a 1941 vintage. Based on a conversation I had with Scott at Logan he tells me that my age Lathe the Mounting holes were drilled and tapped in the field for a Quick Change Gear Box. But, I failed to ask if the QCGB used a different Lead Screw. After seeing some photos it appears they do. Can someone post a picture of a 700a with a QCGB? Lastly, has someone added QCGB on a similar vintage 700a? Thank you.