Reply to Licking headshell contacts, what's a good solution?

So I always have trouble getting a calibration signal, until I lick the contacts of my headshell (I know I know, bad idea in the long run), at that point I get a nice clear signal and am good to go..

both my headshell contacts and the contacts inside the tonearm's are nice and bright and super clean, golden beauty I must say.. but I'm not sure why it takes that bit of moisture to get a good clean contact going. I don't want to keep having to do this because I know how bad it is for your contact prongs...

Thus leading me to this post... what's a good way to fix this situation? Any types of lubricants or cleaners, D.I.Y., or at home solutions to get these prongs transferring a good clean signal?