Visited local tyre shop today who where unable to help re-sealing rims although they did remove tyres. Although they checked for leak in advance and marked spoke on each wheel accordingly, it was immediately obvious inside rim where the seal had been breached.

Then spent some time chasing around on phone trying to find local assistance before phoning MWS. Very helpful advice explaining that if the seal break is minor and localised they just dug out damaged area and re-filled with sealant, but with a two week turn around even if I delivered rims to them!

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Above is one rim (other similar) where I have dug out damaged area whilst I await the recommended MWS silicone sealant. This after suggesting I do the work myself, bolstered by their mention other customers had done such successfully.

Hopefully this will be an inexpensive solution to the results of my meddling once I've waited 48 hours for sealant to cure.

Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone