I may need to add a second small mast to my quiver as well to go with my quiver of Sailworks Revolutions 3.6-5.0
It looks like Sailworks no longer offers standard diameter masts for 370 and 400. So if I end up getting a second mast (likely a 400) it will likley be a RDM which means I need a RDM extension.
I could still use a short SDM extension for other gear though.