Mark Levinson 33 amplifier: searching for the schematic diagrams ... question for Jonathan Valin, R. Harley, J. Atkinson

Hello Jonathan, Robert, John, and all the members of this forum
All my stuff are Mark Levinson, the reference line: ML 33, ML 32, ML 31.5 and ML 30.6 - speakers: Avalon Osiris - Power cables and interconnects  NBS black label - Speaker cables MIT bi and triwire EVO 850 shotgun - in the past 4 years i builded a dedicated listening room: 10 m x 7.5 m x 3.20 m  - sounds great ...
At the moment, there are no problems with the system - Nevertheless I would be happy if I could find the schematic diagrams from the reference line, specialy the diagrams from the ampifier ML 33  I'm interested in - so if somewone of the members of this forum could give me a hint where to look or who to address me, please let me know - Detail : I'm willing to pay a price for the diagrams ...
Greetings from Belgium (Europe)
and thanks in advance,
Roland