Henry said:iwatt,
I never got the True Sorcery book (contributed the money to Green Ronin's fun raising instead), but there is a sheet done by user Sinister Mister at http://www.hive-brain.com/BlackCompanySpellDCCalculator.zip for the Black Company game. No one has done any work for the True Sorcery, to my knowledge. Sorry I couldn't be of more help!