Careful there Kingof...
Oven cleaner will DOUBLE the oxidation immediately after you remove it... The aluminum will be effected by the cleaner immediately. It's good to use on blocks and iron like that but not aluminum.
For the oxidation I would suggest (onlu siggest mind you) shopping the parts store for aluminum polish and do it by hand then some brake-clean to clean off the excess then a blow gun to blow out the extra junk... The brake-clean will evaporate without hurting the plastic coating on any of the internals, Carb cleaner will effect the placstic insulation of the wiring....
That's just my opinion Wes don't hate me...
FE