It seems my 10 month old set of Weitec Hicon GTNs have succumb to the elements

I reckon road salt has started the corrosion process, even though the car was rarely used during the winter! Im not sure if the adjuster rings are seized, didnt have time to check today...
Once i clean the threads up and loosen up the adjuster rings (with WD40?), do i coat them with waxoyl or chain lube/white spray grease?
Also they came with no C spanner, could i use some large grips as an suitable replacement?
