Centre Stand Refurb

[Fazerider]

I bought a cheap Dremel knock-off which came with all manner of cutting, grinding and rasping tools. The tiniest burr is great for getting into the tight corners.
If you can’t lever the rubber bung out you can cut it then drill a hole through both bits and secure it with a suitable nut and bolt.
And another vote for Hammerite Smooth applied by brush… apparently sticks better to rust that hasn’t been treated (so long as the loose stuff has been removed).