FM changes on the dev server have been datamined, and with them this little gem:
This is despite every historical source I can find claiming far lower than this - like with the link below at 2657kg empty, from the online japanese archives. Scroll down to page 30 and you’ll see a handy table claiming as much.
https://www.jacar.archives.go.jp/das/image/C08011006300
Francillion’s “Japanese Aircraft of the Pacific War” also confirms this:
Anyone got more information on the N1K2s or know what the source material was for the stupidly high weight of 3125kg?