#2
I think contact cleaner is generally recommended, I'm not sure on a brand.
I don't give a shit if you listen to me or not
#3
lol wd-40 can be used for anything i guess. you mean the cable ends? the male part? maybe you can polish it up with that. i think it's non-corrosive for the gold, but dont take my word for it.
Jackson RR5 ivory w/ EMG 81/85
Jackson DX6 w/ SD Distortion & Dimarzio Super Distortion
Fender Starcaster Sunburst
Mesa/Boogie DC-3
Johnson JT50 Mirage
Ibanez TS-9
Morley Bad Horsie 2
Boss CE-5

ISP Decimator
Boss DD-6
Korg Pitchblack
#4
try some steel wool. or scotch brite. they should clean it off well. then wipe it with a damp cloth then dry it off.
The Best Floyd Rose Is A Setup Floyd Rose!

Gear:
STARcaster Strat
Dean Tradition Acoustic
03 B.C. Rich NJ Warlock Speedloader
Xaviere XV-599
Epi 1984 Explorer
Crate GTD65
Epi Valve Jr
Bogner Alchemist Head
Marshall 1960B