I have an Otto Busch carbon steel razor that likes to rust anywhere at anytime. I have tried camelia oil, mineral oil, Wahl oil, gun oil, clove oil, olive oil, lanolin oil and finally motor oil. Nothing! I tried gun wax, car wax, furniture wax, fountain pen wax and ear wax, the rust keeps coming back. I even polished it with Simicrome polsih and then with Flitz. What next, give me some ideas. Juan.