That G3 is brilliant for cutting the paint and my rattle can sprayed parts have a much improved shine, so thanks, Bill.
Unfortunately, Ian was right, so the front mudguard needs a respray, as do the fork sliders.
I was chatting to the neighbour who said that he had used some rubber matting to line his tool box trays and those tools that were oiled reacted with the rubber to leave marks in the metal (chrome, I presume - must check)
Spawn of the devil, available at the poundshop and oh so handy - get thee behind me, satan🤪