tr7dan wrote: ... Would you consider these to be useable ?
They look like they have a few more years of service left

But keep an eye on them all the time.
I have a gut feeling (so no proof) that the damage visible in the picture I posted earlier was caused by the fuel available these days
Make sure to fit the (rubber) mount between airbox and throttle lever mounting.
Better still to replace it with a more solid support, as that will take away much strain from the carburettor mounts themselves.
And add some sealant on the back (manifold side) of the mounts to prevent leaks.