Fail calibration if parameters are irrational

[mcm001]

https://media.discordapp.net/attachments/725846784131203222/1349523042757382236/image.png?ex=67d368c6&is=67d21746&hm=2e3676882d5f2324d1292d990d514ab33f00feb4bc05dd139119a44d57dd323a&

[person4268]

(non discord image)