I've used the Zero on three different arms recently: Glanz MH-104S, SME 312, and SME 3012R ... the latter giving the best results for me, mounted on a Jelco HS-30 headshell.
So, suggest you try it on a heavy headshell on the 3012.
currently use my Durand Tosca (10.5") for my pair of Miyajima Infinity's (i have a 1.0 mil and 0.7 mil). previously i did use my Durand 12" Telos and it worked great.
the Infinity should be quite similar to the Zero. member Jazdoc does have a Zero on a Durand Tosca.
I haven't had a Zero in my system but I do have the Premium BE. They are pretty similar with the BE being a bit heavier. I have successfully used it on my Schick 12" for some time.
I've used the Zero on three different arms recently: Glanz MH-104S, SME 312, and SME 3012R ... the latter giving the best results for me, mounted on a Jelco HS-30 headshell.
So, suggest you try it on a heavy headshell on the 3012.
I know nothing about this arm but owned it for a while after buying a job lot of first class but rather old equipment. Probably very rare but it's a 12" arm!