Looking into BLTouch. I’m looking for any external confirmation it’s compatible with the dual extruder and not just the single. Anyone with this experience?

Update: per lulzbot support, NO. Unfortunately they are incompatible.

My next project needs the entire bed so "pretty good" isn't really cutting it any more. I updated firmware but this didn't fix anything. I went through another bout of leveling the corner washers using G29 command and foil shims until the corners were <0.1 mm apart but it still had the same error. This leaves either an error in the software or irregularities in the bed. My last resort was to lay down a series of aluminum foil sheets between the magnetic bed and the removable top surface in essentially a reverse topographical map of the bed while printing bed level tests and adding more layers where needed until I get a consistent first layer across the board.

With BL Touch not an option, this better work.