Red Erasors, contacts, and gold revisited

Quantum tunnelling eh? No comment :) FWIW, I am still a big fan of LPS-1, I've used it for years to clean & restore some of the most inconsolable antique potentiometers & switches. I would think that a greaseless lubricant of that type would be very happy on computer connectors.. As for erasers, I'm assuming that red pencil erasers are out due to their slight abrasive characteristics? what about the 'kneaded' erasers that chalk / conti artists use? (I'm not talking about Artgum ) Please let me know if this is bad thinking... Bill PS Thanks to everyone for posting the wealth of MDS background - I now feel like it was worth my time to drag this behemoth home. Hey, anything with a bank of switches & lights has got to be OK, right?