[mot]

i agree with vince on the electrolysis
just stick the end in the bucket for a few days it will come out
ive used it on maybe a hundred "frozen "shocks and about 75 carburetors
no odor,no mess and dirt cheap ,maybe .25 cents worth of sodium carbonate
as with anything, it will take time to soak in the tight place,but the rust will dissolve
tom