Gavin,
The long springs were removed & placed into a container of laquer thinner and then along with the entire track assemblys later after tracks were degreased and brass wire brushed lightly to remove anything loose. The little side springs were removed and reinstalled later after Hardest part was waiting for the paint (Rustoleum - Rust Tough Semi-flat) to dry.

Will be using a multi-purpose grease for the tracks just prior to assembly into car.