The Mayware Formula IV is just a wonderful arm. Wish I still had one, but they have suffered from the same run up in prices that all arms have seen. At least they deserve it. You should get it going - your ears will thank you.
I wasn't sure exactly what you meant by the SME mount being a very bad design, so didn't respond directly to it. I sort of assume you mean that the bayonet isn't rigid enough, but one of the reasons for the straight arm headshells you hold in even less high regard is greater rigidity. Though they don't look that rigid, I believe they manage to be more so than the S arm bayonet.
I wasn't sure exactly what you meant by the SME mount being a very bad design, so didn't respond directly to it. I sort of assume you mean that the bayonet isn't rigid enough, but one of the reasons for the straight arm headshells you hold in even less high regard is greater rigidity. Though they don't look that rigid, I believe they manage to be more so than the S arm bayonet.