Breuer Type 8C MkII Info Needed


Does anyone know what are the effective mass, and appropriate cartridge compliance and weight for the Breuer Type 8C MkII? Thanks.
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I’ve been using a Magnepan arm (7 g EM), for a few decades.      It’s had a couple Denon 103Ds (12 x 10-6cm/Dyne), a Dynavector 17D3 (15 x 10-6cm/Dyne and now a Soundsmith Aida (22 µm/mN, "Medium Compliance", according to them) mounted on it.        All tracked and performed beautifully, while none had the compliance of my Sonus Gold/Blue (50 x 10-6cm/Dyne), which I still miss.       Wish I still had one to compare with the others, none of which I’ve yet worn out.
Contact brinkmann - their 10.5 arm is based on it - sumiko made the mdc 800 - also based on it. Both are pretty helpful.

I know from Les who ran walrus systems that they work very well with EMT cartridges
My Sumiko 800 which is also based on Breuer has 6 counterweights.
Meant for carridges from 6g. till 30 g. So, obviously , meant as
''universal arm''. I have no idea if you can get from Brinkmann
added weights? Breuer refused to deliver any extra weights. 
Les Wong told me that the Brinkmann (something he also imported) was a better made version of the Breuer due to the counterweight and better manufacture. If you can find Les Wong, I also think think Peter at KJ West One in London also knows a lot about this arm (he worked with Les at Walrus Systems). I do wonder if the 8c was a superior arm to early itterations that were made when Breuer was a younger man and probably had steadier hands.