I use WD40 - mainly on a Remus Titanium can, but also on any other parts that end up with tar spots - front engine casing for example. works a treat and no danger of fire!! or damaging any surfaces with harsher solvents - and it leaves a bit protection as well.
I use WD40 - mainly on a Remus Titanium can, but also on any other parts that end up with tar spots - front engine casing for example. works a treat and no danger of fire!! or damaging any surfaces with harsher solvents - and it leaves a bit protection as well.