Having ridden my HD for the last few months in a very wet and damp Irish climate its time to bestow some TLC on it and bring it back to its former glory. Need suggestions on how to properly clean the swing arms and other aluminium areas that have become really dirty. Up front for instance parts of the fork have black marks on them which I suspect is some sort of oxidisation. Any ideas on what cleaning agents to use to shift these marks. Have just tried Autosol which helped a bit, but nowhere near enough. Is it a case of just using more Autosol, leaving it on a while longer and using plenty of elbow grease, repeating the process until all marks gone and shine restored. Is Autosol a strong enough cleaner. Heading to Killarney next weekend for the Emerald Isle HOG tour and want my HD to look its best. All advice greatly appreciated.