Thanks all. So today it was off with the mudguards which was straight forward. Undersides were only a little dirty having only covered a couple of hundred miles, so an oily rag wipe underneath was all that was required. Good to see Morgan had used a silicon seal in the creases and bracket attachment to prevent water access. First liberal coating of freshly heated Dinotrol wax (does not stink like waxoyle) covered all the undersides and worked in to every nook and cranny. A few minutes in the cold air had it drying enough to add a second coat of heavier wax. Again previously heated with a heat gun so it runs like melted butter. Spread all around with a soft brush. Half hour later both remounted and excess wiped off the surfaces with Duck oil sprayed on wipes. Job done. 😎👍