Over here, the pattern community has been making their own Hyde mounts ever since Mr Hyde sketched out the idea at the WC's years ago and gave it to one of the Norwegians! And even though they're home made they work perfectly... just like a Hyde. Which isn't surprizing.
Good luck with your project.
Keep us informed how you intend to solve the nose ring situation.

As you'll be aware, it isn't the back part of the a decent soft mount thats thats been posing the problems for petrol pattern.
It's the front... the nose ring. The magnetic pick up gets in the way.
The only way around it is to drop the nose ring and use a stiff, soft mount....that kinda defeats the point.
Keep posting the progress.