I have, but I've reached the point where I can just send stuff to it and it materalizes, without lots of tweaking and tuning, and I intend to keep it that way for a while :) as you probably know, upgrading these printers usually means fucking everything up and gradually rebuilding
Or a remote direct drive, like a Zesty Nimble or a Flex3Drive.
I used to have a Nimble on my old CR-10. It’s got a few quirks but the toolhead becomes very lightweight so it can move faster with less strain on the belts!