i recommend liberal coatings of ACF50 spray, it's what is used on aircraft to stop corrosion.
My lower fork legs got spidering under the lacquer and they have just been replaced under warranty.

EFI Speedmaster, Stainless Ride Slash Cut Silencers. Fly Screen. Oil Temp gauge. Crystal clear headlight. Drilled stem Oval Mirrors. Short Sissy Bar & Rack.