Tornado: Marstrom mast step

Hello All,
Asking here first before posting to CatSailor and reaching out to the ITC...
Currently restoring a Tornado with some 'medal' history to it and looking to source / fabricate a mast step for an aluminum Marstrom mast.
I can see how this sits on top of the front beam..just not sure how the bolt passes into the beam and dolphin striker?

Here are photos of the mast base and rotator:
https://www.thebeachcats.com/pictures?g2_itemId=131399
https://www.thebeachcats.com/pictures?g2_itemId=131402
Again- I can fabricate this with some info.


Many thanks!
Cameron



Edited by cameronb on May 10, 2019 - 08:20 PM.