Can you get plastic stanchions?
Or can you plastiv bush & washer those?
Can you open a body's wire hole(s) and use shrink tube if your careful. And if you are more careful, maybe it might look like a heavy pipe collar. Easy to remove and try again too.
Rough sand the handrail area where you will insulate with shrink tube. Use a dot of rubber cement or innertube glue there and squeeze it out with shrinking., Slicone peels at the edges some, so slips easier than the stuff for rubber, which has gripped best for me on raw music/ piano wire ,(local hobby shop should have that) and that metal has better adhesiveness than handrails.
