...and a word about the Mountney boss horn push. It is an extremely bad fit. Supposed to push fit into the boss but it both falls in and out of it. Despite buying the "proper" fitment, I'm still going to have to adapt it to stop it just dropping out. There's no way it'll stay put with all the vibration going on :-(
So it's a choice of sticky foam around the outside of the horn boss or a vastly over-engineered bolt through option...
Sometimes KISS doesn't always work out the best, cheapest, lightest or best engineered solution...