After looking at the mods posted for the V2 Mosquito hotend I decided to do the same for my printer. I don’t think there is a need for the second rail on the X gantry unless there are multiple hot ends, which I don’t have, so I removed it. This takes a bunch of weight off the gantry…faster prints, better quality?
You are correct. You should be able to achieve straight line federated of around 30000 with acceleration of 3000 max. I’d probably pull that way back for quality. 2000 is a nice acceleration setting. With v6 hotends, you’re unlikely to be able to print faster than 120mm/s reliably.
Completely forgot about the gcode yesterday. Sorry. Will remind myself to check later this morning.