I have not seen the innards of the rack,but cannot imagine that there is sufficient rubber in the metalastic bushes,to alleviate all of the vibrations,there are quite a lot, especially with a wooden steering wheel,which I would like to keep. so I am thinking more rubber would be an advantage
I’ve got a quarter of a century’s experience of Morgans.
Dealers worldwide,and the Morgan factory come to me to sort out problems and to make parts
You really don’t need extra rubber in the rack mounts
If there’s a vibration issue look at
Tyre balance
Tracking
Rack free play
UJ/track rod end play