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@Jung
Sent up several offerings to the lathe gods last night. I’ve had a problem with intermittent chatter ever since I put it back together. I thought I cracked it shifting to sharper, HSS tools but moving back to steel and I was right back to square one. After trying just about every tool I could find and grinding a few more, I wondered if it might be the spindle bearings on the way out. I stuck an indicator on the chuck and sure enough, there was movement. Turns out, I’d not wound in sufficient preload on the retaining nut. Cuts like butter now and the insert tooling works perfectly. Almost glasslike surface finish on 12L14 steel, even bone dry! Talk about going the long way around….